hex key vs Inbus wrench

hex key and Inbus wrench both are nouns.

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

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

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

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