Here are some examples:
* To, too, two: All pronounced the same, but have different meanings and spellings.
* See, sea: Sound the same, but "see" is a verb meaning to perceive with the eyes, while "sea" is a large body of saltwater.
* Write, right: Sound the same, but "write" is a verb meaning to form letters on paper, while "right" can mean correct or a direction.
Homonyms can be confusing, especially in written communication, but they can also be a source of humor and wordplay.