Unbrako key vs Unbrako wrench

Unbrako key and Unbrako wrench both are nouns.

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

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

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

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