grammar tutoring, one word pair at a time
All lessons
Every confusing word pair, spelling mix-up, and grammar rule we've broken down — browse the full collection below.
Word pair
Affect vs Effect
One's a verb, one's a noun — here's the trick to never mix them up again.
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Word pair
Adviser vs Advisor
Both are used — but one is far more common depending on where you write.
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Spelling
Tomatoes or Tomatos
A simple plural rule settles this common spelling mistake for good.
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Spelling
Koozie or Coozie
Neither looks "wrong" at a glance — but one is the standard spelling.
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Word pair
Segway or Segue
A brand name and a word for smooth transitions — easy to mix up in writing.
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Word pair
Freshman or Freshmen
Singular or plural — the rule here is simpler than most people think.
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Spelling
Lieing or Lying
A quick spelling rule for verbs that end in "ie" before adding "-ing."
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Spelling
Loosing or Losing
One extra letter changes the meaning completely — here's how to keep them straight.
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Word pair
Lose or Loose
Lose is about loss, loose is about space or tightness — a simple way to remember.
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Spelling
Truely or Truly
A common typo that spell-check almost always catches — here's why it happens.
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Word pair
Fewer or Less
Countable or uncountable — the simple test that settles it every time.
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Grammar
Choosed or Chose
Why "choose" breaks the normal past-tense rule, explained simply.
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Word pair
Grammar or Grammarly
One is knowledge, the other is a tool — why the difference matters for writers.
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Seasonal
Trick or Treat — Hours
What time trick-or-treating typically starts and ends, explained clearly.
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