There are some words that are commonly used interchangeably, when in fact they have different meanings. Here are a few of the words that are frequently used incorrectly.
You're and Your:
The word "you're" is a contraction for "you are".
Correct: You're a good friend. (you are)
The word "your" is used to imply possession or ownership.
Correct: Is this yours? (possession)
Correct: I like your new car.
Sale and Sell:
The word "sale" and "sell" are not interchangeable. Sell is a verb, used to show what the noun (person, place, or thing) in the sentence is doing. "I am going to sell this."
Sale is most commonly used as a noun, such as in the sentence "There is a big sale at the mall."
Correct use of both words: "I am going to sell this shirt at a garage sale."
Too and Two:
The word "two" is the number 2.
Correct: There are two flowers in that vase.
The word "too" usually means "also".
Correct: I would like to swim, too. (I would like to swim, also.)