wiggle nail vs fastening

wiggle nail and fastening both are nouns.

Word	Noun	Adjective	Verb	Adverb
wiggle nail	Yes	No	No	No
fastening	Yes	No	No	No

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

wiggle nail: a small strip of corrugated steel with sharp points on one side; hammered across wood joints in rough carpentry
fastening: restraint that attaches to something or holds something in place

Other hypernyms of wiggle nail include fastener, fixing, holdfast.

wiggle nail (noun)	fastening (noun)
a small strip of corrugated steel with sharp points on one side; hammered across wood joints in rough carpentry	the act of fastening things together
	restraint that attaches to something or holds something in place