ant / aunt are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
ant: (noun) social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers.
aunt: (noun) the sister of your father or mother; the wife of your uncle.
ant: AE·n·t
aunt: AE·n·t
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)