zeta wrench vs Allen key

zeta wrench and Allen key both are nouns.

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

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

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

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