comment

nouns

a statement that expresses a personal opinion or belief or adds information
"from time to time she contributed a personal comment on his account"
is derived from
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"
is derived from
a report (often malicious) about the behavior of other people
"the divorce caused much gossip"

verbs

make or write a comment on
"he commented the paper of his colleague"
is derived from
explain or interpret something
is a type of (narrower)
make plain and comprehensible
"He explained the laws of physics to his students"
provide interlinear explanations for words or phrases
"He annotated on what his teacher had written"