Allen key vs Inbus wrench

Allen key and Inbus wrench both are nouns.

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

As nouns, Allen key and Inbus wrench are synonyms defined as:

Other synonyms of Allen key include hex key, Inbus key, Unbrako key, Unbrako wrench, zeta key, zeta wrench.

Allen key (noun)	Inbus wrench (noun)
a wrench for Allen screws	a wrench for Allen screws