Roget's Thesaurus of English Words and Phrases by Peter Mark Roget

592. Correspondence — N. correspondence, letter, epistle, note,

billet, post card, missive, circular, favor, billet-doux; chit, chitty†, letter card, picture post card; postal [U.S.], card; despatch; dispatch; bulletin, these presents; rescript, rescription†; post &c (messenger) 534. V. correspond with; write to, send a letter to; keep up a correspondence. Adj. epistolary. Phr. furor scribendi [Lat.].