detailing vs description

detailing and description both are nouns.

Word	Noun	Adjective	Verb	Adverb
detailing	Yes	No	No	No
description	Yes	No	No	No

As nouns, description is a hypernym of detailing; that is, description is a word with a broader meaning than detailing:

detailing (noun)	description (noun)
an individualized description of a particular instance	sort or variety
	the act of describing something
	a statement that represents something in words