I think informally it's usually
comments. If I comment on something, I'm making comments. When someone gives their opinion, it is rare that they touch only on a single aspect of the topic being discussed. When a politician or government official issues a formal statement, that statement may be called a comment. If he does not wish to comment, he says "No comment" or "I have no comment on that".
Above are my comments on your original post.
CJ