Grammar & Usage
Good writing is not just about hitting a word count. A 1,000-word essay with the wrong "affect" still reads sloppy. This section covers the word pairs that trip up even strong writers: homophones, near-homophones, and pairs that spell-check will never catch because both words are real.
Each article includes a plain-English rule, example sentences showing correct and incorrect usage, and a short FAQ. Pair these with the word counter when you are polishing a draft and want counts plus clarity in one pass.
Affect vs. Effect: Which One Do You Need?
Affect is usually a verb (to influence). Effect is usually a noun (the result). Here's how to keep them straight.
It's vs. Its: The Apostrophe Rule
It's = it is or it has. Its = belonging to it. No exceptions, no excuses.
Then vs. Than: Time vs. Comparison
Then relates to time or sequence. Than is for comparisons. Mixing them up changes your meaning.
Who vs. Whom: Still Relevant in 2026
Who is the subject. Whom is the object. Here's a simple way to pick the right one.
i.e. vs. e.g.: Latin Abbreviations Explained
i.e. means "that is" (in other words). e.g. means "for example." Don't swap them.
Lay vs. Lie: The Most Confusing Verb Pair
Lay needs an object (you lay something down). Lie doesn't (you lie down). Past tense makes it worse.
Further vs. Farther: Distance vs. Degree
Farther is for physical distance. Further is for figurative distance or "more."
Compliment vs. Complement
A compliment is praise. A complement completes something. Wine complements cheese; your friend compliments your outfit.
Insure vs. Ensure vs. Assure
Insure = insurance. Ensure = make certain. Assure = reassure a person.
To vs. Too: Two O's Mean "Also" or "Excessive"
To is a preposition or part of an infinitive. Too means also or excessively.
Whose vs. Who's
Who's = who is or who has. Whose = belonging to whom.
Into vs. In To: One Word or Two?
Into is a preposition showing movement or transformation. In to is in + to from a verb phrase.
Grammar FAQ
Why do these word pairs get confused?
Most mix-ups happen because words sound alike (affect/effect) or look almost identical (its/it's). Context usually makes the right choice obvious once you know the rule.
Will fixing grammar change my word count?
Sometimes by a word or two. Swapping "it's" for "its" does not change length, but replacing a phrase with a single correct word might. Use the word counter to verify after edits.
Which grammar topics should I check first?
Start with the pairs you misuse most often. Affect vs effect, then vs than, and its vs it's cover a large share of everyday writing mistakes.
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Last updated: 2026-08-28