Here are some examples:
* Bear (to carry something) and bear (a large animal)
* Right (correct) and right (the opposite of left)
* See (to observe with your eyes) and sea (a large body of saltwater)
* To (towards) and too (also) and two (the number 2)
Homonyms can cause confusion in writing and speech, so it's important to choose the right word based on the context.