to be in agreement or conformity (often fol. by with or to )

His actions do not correspond with his words.

to be similar or analogous; be equivalent in function, position, amount, etc. (usually fol. by to )

The U.S. Congress corresponds to the British Parliament.

to communicate by exchange of letters.

verb

differ , disagree

verb

accord , amount , approach , assimilate , be consistent , be identical to , be similar to , coincide , compare , conform , correlate , dovetail , equal , fit , harmonize , lip sync , match , partake of , reciprocate , resemble , rival , square , tally , touch , answer , drop a kite , drop a line , drop a note , epistolize , exchange letters , have pen pal , hear from , keep in touch , pen , put pen to paper , reply , scribble , send letter , send word , write , check , chime , comport with , consist , become , befit , go with , suit , measure up , parallel , constitute , agree , communicate , complement , comport , jibe , respond