spec vs description

spec and description both are nouns.

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

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

Other hypernyms of spec include verbal description.

spec (noun)	description (noun)
a detailed description of design criteria for a piece of work	sort or variety
	the act of describing something
	a statement that represents something in words