Common Homophones:
* to, too, two
* there, their, they're
* here, hear
* see, sea
* write, right
* know, no
* by, buy, bye
* your, you're
* then, than
* its, it's
Less Common Homophones:
* air, heir
* allowed, aloud
* bare, bear
* brake, break
* buy, by, bye
* cent, scent, sent
* choose, chews
* course, coarse
* dear, deer
* eye, I
* flower, flour
* for, four
* hear, here
* hoarse, horse
* hour, our
* idle, idol
* knew, new
* knight, night
* lead, led
* meat, meet
* none, nun
* pair, pear
* peace, piece
* pray, prey
* principal, principle
* road, rode
* see, sea
* so, sow
* some, sum
* stair, stare
* tail, tale
* their, there, they're
* to, too, two
* waist, waste
* weak, week
* weather, whether
* whole, hole
* write, right
This is not an exhaustive list, and there are many more homophones in the English language. It is important to know the difference between these words to avoid miscommunication.