THESAURUS
article, causerie, descant, discourse, discussion, disquisition, dissertation, essay, etude, examination, excursus, exposition, feature, first approach, homily, introductory study, lucubration, memoir, monograph, morceau, note, outline, pandect, paper, paragraph, piece, preliminary study, prolegomenon, screed, sketch, special article, study, survey, term paper, theme, thesis, tract, tractate, treatise, treatment
