English traps: 6 confusions you'll never make again

Published on 17 June 2026 Duration 3:47 Full transcript

"Don't loose this opportunity" — one letter too many, and the email is gone. This video untangles six confusions that trip up learners and native speakers alike: lose and loose, practice and practise (where British English draws a line and American English doesn't bother), assure, ensure and insure, affect and effect, their, there and they're, and finally its and it's, the rebel that inverts the apostrophe rule. One memory trick per case, and a recap to lock them in. Full transcript below.

Chapters

  1. 0:00 Introduction
  2. 0:18 Lose vs Loose
  3. 0:46 Practice vs Practise
  4. 1:09 Assure / Ensure / Insure
  5. 1:35 Affect vs Effect
  6. 2:04 Their / There / They're
  7. 2:33 Its vs It's
  8. 2:58 Recap

Transcript

Have you ever sent an email, then spotted a typo half a second later — the kind that makes you physically cringe? Something like: "Don't loose this opportunity." Yeah. We've all been there. So today, we're clearing up six of the most common English confusions — the ones that trip up learners and native speakers alike.

If you're losing something — your keys, your mind, a game — that's L-O-S-E. One O. If something is loose — like your jeans after a big dinner, or a screw that needs tightening — that's L-O-O-S-E. Two O's. Here's the trick: loose has extra space inside it — just like it has an extra O. "Don't lose your confidence." ✓ "This rope is too loose." ✓ "I don't want to loose this chance." ✗ — that one's wrong.

If you're American, good news: just use practice for everything, and you're done. British English? Stay with me. Practice, with a C, is the noun: "I need more practice." Practise, with an S, is the verb: "I need to practise daily." Think of advice and advise — exact same pattern. C for the noun, S for the verb.

Three words. Three meanings. Assure — you're reassuring a person: "I assure you, everything will be fine." Ensure — you're making something happen: "Please ensure the door is locked." Insure — that's about money and insurance: "We need to insure the car." So just follow the vowels — A, E, I: Assure a person. Ensure an event. Insure with money.

Most of the time, affect is the verb — it means to influence: "The weather affects my mood." And effect is the noun — the result: "The effect was immediate." The trick: Affect is an Action. Effect is the End result. Now, a small plot twist — effect can occasionally be a verb too, meaning to bring something about: "The CEO will effect major reforms." But that's rare. 99% of the time, stick with the main rule.

Their — possession: "That's their car." There — a place or existence: "The keys are over there." They're — short for they are: "They're coming at noon." All three sound the same: . Quick test. Can you swap in they are? Use they're. Is it about a place? Use there. Is it about ownership? Use their. Put them all together: "They're presenting their findings there tomorrow." Three words, three completely different jobs.

This one breaks the usual rule — and that's exactly why it's so tricky. Its, no apostrophe, is possessive: "The dog wagged its tail." It's, with an apostrophe, means it is or it has: "It's raining." "It's been a long day." Normally, an apostrophe signals possession. Not here. Its is the rebel of English. Simple test: can you say it is or it has? Then use it's. If you can't — its, no apostrophe.

Six confusions — let's lock them in. Lose — one O. Loose — two. The extra O is there to remind you something's hanging loose. Practice and practise — British English draws the line, American English doesn't bother. Assure a person. Ensure an event. Insure with money. Affect is usually your verb. Effect is usually your noun. Their is ownership. There is a place. They're is they are. And its — no apostrophe — is possessive, while it's — with the apostrophe — means it is or it has. The rebel of the group. Get these right, and your writing instantly looks more polished. And once they're locked in, they become automatic.

So which of these six has tripped you up the most? Drop it in the comments. And if you want to go deeper, head over to the erosophia.eu blog. See you in the next one, language nerds!