Difference Between: Than vs Then, Their vs There, Debit vs Credit
English is full of pairs that look and sound alike but behave very differently – whether you’re writing a quick email or balancing a ledger, mixing up “than” and “then” or “their” and “there” can change your meaning. This guide unpacks three of the most Googled “difference between” questions — from grammar mix-ups to accounting basics — with clear rules and real examples.
Common confusions in English: Among the top 1% of grammar questions asked online ·
Homophones causing trouble: There, their, and they’re are confused 2 million times monthly ·
Grammar rules for ‘than’ vs ‘then’: Than is for comparisons; then is for time sequence ·
Debit vs credit in accounting: Debits increase assets; credits increase liabilities
Quick snapshot
- “Than” is used for comparisons, “then” for time (Merriam-Webster (authoritative dictionary))
- “Their” is possessive, “there” is place (TIME (news magazine))
- Debits increase assets and expenses; credits increase liabilities, equity, and revenue (Xero (accounting software provider))
- Whether “different than” is acceptable in American English vs British “different from” remains debated among usage guides
- Regional usage differences for “complete” vs “finish” in British vs American English are not fully documented
- The exact monthly confusion rate for ‘there/their/they’re’ (2 million) is an estimate that may vary by source and methodology
- Double-entry bookkeeping, the foundation of debits and credits, was formalized in 1494 by Luca Pacioli (NetSuite (business management software))
- Mastering these three pairs reduces the most common writing errors in college essays (Millersville University Writing Center (university resource))
The table below condenses the key differences into a quick reference.
| Pair | Key insight |
|---|---|
| Complete vs Finish | Complete has Latin origin; finish has French origin. Both mean “to bring to an end” but complete emphasizes wholeness |
| Than vs Then | Than is a conjunction; then is an adverb. They are never interchangeable in standard English |
| Their vs There | Their comes from Old Norse; there comes from Old English. They sound identical but have totally different functions |
| Debit vs Credit | From Latin: debit means “what is owed”; credit means “trust”. Double-entry bookkeeping dates to 1494 |
What is the difference between complete and finish?
When to use complete
Complete emphasizes that all parts are present or the task is thoroughly done. It derives from Latin.
When to use finish
Finish emphasizes the end of an action. It derives from French. Both can be synonyms, but in formal writing, complete is often preferred.
She completed the puzzle (all pieces in place) vs. She finished the race (crossed the finish line).
The nuance: While often interchangeable, the choice can signal whether you emphasize wholeness or completion.
What is the difference between than and then?
Using than for comparisons
- “Than” is a conjunction used exclusively in comparative statements, such as “bigger than” or “more than” (Merriam-Webster (authoritative dictionary)).
- It also introduces the rejected choice in expressions of preference: “I would rather read than watch TV” (Grammarly (writing assistant)).
- A special case is the phrase “no sooner … than”, which signals immediate sequence (Merriam-Webster).
Using then for time and sequence
- “Then” is an adverb meaning “at that time” or “after that” (Grammarly).
- Common error: “I’d rather eat then sleep” (incorrect) vs “I’d rather eat than sleep” (correct) — the first implies a sequence, the second a preference.
Memory aid: “Than” has an “a” like “comparison”; “then” has an “e” like “time”. This simple letter check eliminates most mistakes (Ginger Software (spelling tool)).
“Than is a conjunction used exclusively in comparative statements.” — Merriam-Webster
The implication: One letter changes the entire grammatical function. Writers who master this pair avoid one of the most common errors in English.
What is the difference between their and there?
Their indicates possession
- “Their” is a possessive pronoun, always modifying a noun: “their car”, “their idea” (TIME (news magazine)).
- It comes from Old Norse, which explains the unusual spelling.
There indicates place or existence
- “There” is an adverb of place (“over there”) or an expletive with forms of “be” (“there is”, “there are”) (Core77 discussion boards (community forum)).
- Memory trick: “their” contains “heir” (inheritance) — ownership; “there” contains “here” (location).
“Their is a possessive pronoun, always modifying a noun.” — TIME
A university writing center lists “wrong word” as one of the most common college writing mistakes, and “their/there” is a top offender (Millersville University Writing Center (university resource)).
The pattern: Homophones create confusion precisely because they sound identical. The key is recognizing the function — possession vs location — and applying the rule instantly.
What is the difference between debit and credit?
Debit meaning in accounting
- A debit is an entry on the left side of a ledger. It increases asset and expense accounts, and decreases liability, equity, revenue, and gain accounts (NetSuite (business management software)).
- From the bank’s perspective, a debit is a withdrawal.
Credit meaning in accounting
- A credit is an entry on the right side of a ledger. It increases liability, equity, gain, or revenue accounts, and decreases asset, loss, and expense accounts (Xero (accounting software provider)).
- From the bank’s perspective, a credit is a deposit.
Every transaction must have equal debits and credits — this is the foundation of double-entry bookkeeping. A popular mnemonic is DEAL: Debits increase Expenses, Assets, and Losses (Reddit bookkeeping community (discussion forum)).
The trade-off: Debits and credits are not good or bad — they are mechanical entries that must balance. For anyone managing a business, understanding this rule prevents costly accounting errors.
Three pairs, one pattern: each boils down to a single, learnable rule. Here’s how they compare side by side.
| Pair | Key difference | Example |
|---|---|---|
| Than vs Then | Than = comparison; Then = time | “She is taller than me” vs “First we eat, then we leave” |
| Their vs There | Their = possession; There = place/existence | “Their house is over there” |
| Debit vs Credit | Debit = left side (assets up); Credit = right side (liabilities up) | Buying equipment: debit Equipment, credit Cash |
För den som vill fördjupa sig ytterligare i skillnader mellan ofta förvirrade ord finns det fler exempel och förklaringar att utforska.
Frequently asked questions
Is it ‘different from’ or ‘different than’?
Both are used, but “different from” is preferred in British English, while “different than” is common in American English. The choice depends on your audience.
Can ‘complete’ and ‘finish’ be used interchangeably?
Often yes, but “complete” emphasizes wholeness (all parts present), while “finish” emphasizes the end of an action. In formal writing, “complete” is more common for tasks requiring thoroughness.
What is a mnemonic for remembering ‘their’ vs ‘there’?
“Their” has “heir” — think of inheritance and possession. “There” has “here” — think of location. That’s the easiest way to keep them straight.
Why do debits and credits have to balance?
Double-entry accounting requires that every transaction has equal debits and credits to maintain the accounting equation: Assets = Liabilities + Equity. This ensures accuracy and prevents fraud.
Is ‘then’ ever used in comparisons?
No, “then” is never used for comparisons in standard English. The only exception is in informal phrases like “then vs now”, where “then” means “that time”.
How can I avoid confusing ‘than’ and ‘then’?
Check the letter: “than” has an “a” like “comparison”; “then” has an “e” like “time”. If you can replace it with “compared to”, use “than”. If you can replace it with “after that”, use “then”.
What is the rule for ‘their’ in possessive grammar?
“Their” always modifies a noun and shows ownership. Never use it as a verb or adverb. If you can replace it with “our”, “my”, or “his”, you’re using it correctly.
For anyone writing in English—whether drafting emails, composing essays, or managing books—the difference between these three pairs is a difference between clarity and confusion. The rule for each is simple; the consequence of mixing them up is a loss of credibility. Master the rules, and your writing becomes sharper, your accounting more accurate, and your readers grateful.
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