author vs coauthor

Other hyponyms of author include abstracter, abstractor, alliterator, authoress, biographer, joint author, commentator, reviewer, compiler, contributor, cyberpunk, drafter, dramatist, playwright, essayist, litterateur, folk writer, framer, gagman, gagster, gagwriter, ghost, ghostwriter, Gothic romancer, hack, hack writer, literary hack, journalist, librettist, lyricist, lyrist, novelist, pamphleteer, paragrapher, poet, polemic, polemicist, polemist, poetiser, poetizer, rhymer, rhymester, versifier, scenarist, scriptwriter, space writer, speechwriter, tragedian, wordmonger, word-painter, wordsmith.