zeta key vs zeta wrench

zeta key and zeta wrench both are nouns.

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

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

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

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