Unbrako key vs zeta wrench

Unbrako key and zeta wrench both are nouns.

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

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

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

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