turnkey vs prison guard

turnkey and prison guard both are nouns.

Word	Noun	Adjective	Verb	Adverb
turnkey	Yes	No	No	No
prison guard	Yes	No	No	No

As nouns, turnkey and prison guard are synonyms defined as:

Other synonyms of turnkey include gaoler, jailer, jailor, screw.

turnkey (noun)	prison guard (noun)
someone who guards prisoners	someone who guards prisoners