chair / chare 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. 👇
chair: (noun) a seat for one person, with a support for the back. (noun) a particular seat in an orchestra. (verb) act or preside as chair, as of an academic department in a university.
chare: NA
chair: ch·EH·r
chare: NA
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)