correspondence / correspondents 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. 👇
correspondence: (noun) communication by the exchange of letters.
correspondents: (noun) someone who communicates by means of letters. (noun) a journalist employed to provide news stories for newspapers or broadcast media.
correspondence: k·AO·r·ah·s·p·AA·n·d·ah·n·s
correspondents: k·AO·r·ah·s·p·AA·n·d·ah·n·t·s
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)