slide fastener vs fastening

slide fastener and fastening both are nouns.

Word	Noun	Adjective	Verb	Adverb
slide fastener	Yes	No	No	No
fastening	Yes	No	No	No

As nouns, fastening is a hypernym of slide fastener; that is, fastening is a word with a broader meaning than slide fastener:

slide fastener: a fastener for locking together two toothed edges by means of a sliding tab
fastening: restraint that attaches to something or holds something in place

Other hypernyms of slide fastener include fastener, fixing, holdfast.

slide fastener (noun)	fastening (noun)
a fastener for locking together two toothed edges by means of a sliding tab	the act of fastening things together
	restraint that attaches to something or holds something in place