Allen key vs wrench

Allen key and wrench both are nouns.

Word	Noun	Adjective	Verb	Adverb
Allen key	Yes	No	No	No
wrench	Yes	No	Yes	No

As nouns, wrench is a hypernym of Allen key; that is, wrench is a word with a broader meaning than Allen key:

Other hypernyms of Allen key include spanner.

Allen key (noun)	wrench (noun)
a wrench for Allen screws	a hand tool that is used to hold or twist a nut or bolt
	a jerky pulling movement
	a sharp strain on muscles or ligaments

Allen key (verb)	wrench (verb)
	twist suddenly so as to sprain
	twist or pull violently or suddenly, especially so as to remove (something) from that to which it is attached or from where it originates
	twist and compress, as if in pain or anguish
	make a sudden twisting motion