comment has 9 distinct synonyms spread across 5 of its 6 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a statement that expresses a personal opinion or belief or adds information
“from time to time she contributed a personal comment on his account”
a written explanation or criticism or illustration that is added to a book or other textual material
“he wrote an extended comment on the proposal”
explain or interpret something
Synonyms, antonyms and the broader and narrower relations for comment come from Princeton University’s WordNet. Full sources and licences.