epilog vs piece of writing

epilog and piece of writing both are nouns.

Word	Noun	Adjective	Verb	Adverb
epilog	Yes	No	No	No
piece of writing	Yes	No	No	No

epilog (noun)	piece of writing (noun)
a short passage added at the end of a literary work	the work of a writer; anything expressed in letters of the alphabet (especially when considered from the point of view of style and effect)
a short speech (often in verse) addressed directly to the audience by an actor at the end of a play