Homophones are words that have exactly the same sound (pronunciation) but different meanings and (usually) spelling.
Here are some homophones:
eye (part of a body) - I (personal pronoun)
be (a verb) - bee (an insect)
buy (a verb) - by (preposition)
dear (an adjective) - deer (an animal)
flour (food noun)- flower (a noun, e.g. rose)
hear (verb)- here (preposition)
meet (verb)- meat (food noun)
peace (a noun, as in world peace)- piece (a noun, as in a piece of pie)
right (an adverb)- write (a verb)
sea (a noun)- see (a verb)