correspondent

(noun) someone who communicates by means of letters. Synonyms: letter writer.

(noun) a journalist employed to provide news stories for newspapers or broadcast media. Synonyms: newspaperman, newspaperwoman, newswriter, pressman.

(adj) similar or equivalent in some respects though otherwise dissimilar. Synonyms: analogous. Examples: "Brains and computers are often considered analogous." "Salmon roe is marketed as analogous to caviar."