zeta key vs Inbus wrench

zeta key and Inbus wrench both are nouns.

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

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

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

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