Unbrako wrench vs hex key

Unbrako wrench and hex key both are nouns.

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

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

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

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