What is another word for "subject"?

Roget's Thesaurus (1911) lists these synonyms for "subject": answerable, apt, article, canvass, chance, commentary, commentator, consideration, contingency, contingent, critic, criticism, critique, danger, deal, delve, dependent, descant, discourse, discoursive, discursive, discuss, discussion, disquisition, disquisitionary, dissert, dissertation, door, editorial, essay, essayist, excursus, explanation, expose, exposition, expository, exposure, expound, forth, from.