naming vs specification

naming and specification both are nouns.

Word	Noun	Adjective	Verb	Adverb
naming	Yes	Yes	No	No
specification	Yes	No	No	No

As nouns, specification is a hyponym of naming; that is, specification is a word with a more specific, narrower meaning than naming:

Other hyponyms of naming include acrophony, numeration, denotation, indication.

naming (noun)	specification (noun)
the act of putting a person into a non-elective position	a restriction that is insisted upon as a condition for an agreement
the verbal act of naming	a detailed description of design criteria for a piece of work
	naming explicitly
	(patent law) a document drawn up by the applicant for a patent of invention that provides an explicit and detailed description of the nature and use of an invention

naming (adjective)	specification (adjective)
inclined to or serving for the giving of names