cousin / cozen 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. 👇
cousin: (noun) the child of your aunt or uncle.
cozen: (verb) act with artful deceit. (verb) cheat or trick.
cousin: k·AH·z·ah·n
cozen: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)