Definition: A subject or topic on which a person writes or speaks; a
proposition for discussion or argument; a text.
Definition: Discourse on a certain subject.
Definition: A composition or essay required of a pupil.
Definition: A noun or verb, not modified by inflections; also, that part
of a noun or verb which remains unchanged (except by euphonic
variations) in declension or conjugation; stem.
Definition: That by means of which a thing is done; means; instrument.
Definition: The leading subject of a composition or a movement.