constrict vs fret

constrict is not a noun while fret is a noun.

Word	Noun	Adjective	Verb	Adverb
constrict	No	No	Yes	No
fret	Yes	No	Yes	No

As verbs, fret is a hyponym of constrict; that is, fret is a word with a more specific, narrower meaning than constrict:

Other hyponyms of constrict include choke, strangle, prim, astringe, strangulate, convulse, convulse, bear down, overbear, choke, gag, choke, scrag.

constrict (noun)	fret (noun)
	a small bar of metal across the fingerboard of a musical instrument; when the string is stopped by a finger at the metal bar it will produce a note of the desired pitch
	an ornamental pattern consisting of repeated vertical and horizontal lines (often in relief)
	a spot that has been worn away by abrasion or erosion
	agitation resulting from active worry

constrict (verb)	fret (verb)
become tight or as if tight	wear away or erode
squeeze or press together	remove soil or rock
	cause friction
	be too tight; rub or press
	decorate with an interlaced design
	carve a pattern into
	be agitated or irritated
	cause annoyance in
	gnaw into; make resentful or angry
	worry unnecessarily or excessively
	become or make sore by or as if by rubbing
	provide (a musical instrument) with frets