something said or written after a question, request, a letter asking for something etc

reply; reaction

(an) opinion, explanation or criticism in speech or writing about an event, book, state of affairs etc

statement of opinion; explanation

the act of communicating

giving, exchanging information, ideas

the art of making judgments about art, literature etc

interpretation, analysis

a statement that defines a word, rule etc

description

the process of explaining; a statement, fact etc that explains

clarification; reason

(an instance of) explaining or describing a theory, plan etc

written description

(an instance of) the process of expressing; a word or phrase

verbalization

the process, state of illustrating or being illustrated; a picture, diagram, example etc used in a book etc

demonstration, exemplification

a comment or opinion; to say something (which is more usual)

comment, observation