subject matter vs digression

Other hyponyms of subject matter include body, corker, reminder, petition, postulation, request, memorial, latent content, subject, theme, topic, aside, divagation, excursus, parenthesis, import, meaning, significance, signification, bunk, hokum, meaninglessness, nonsense, nonsensicality, drivel, garbage, acknowledgement, acknowledgment, refusal, info, information, counsel, counseling, counselling, direction, guidance, commitment, dedication, approval, commendation, disapproval, respects, discourtesy, disrespect, insertion, interpolation, statement, statement, humor, humour, wit, witticism, wittiness, opinion, view, direction, instruction, proposal, offer, offering, entry, submission, narration, narrative, story, tale, packaging, promo, promotion, promotional material, publicity, sensationalism, shocker.