sphinx vs doer

sphinx and doer both are nouns.

Word	Noun	Adjective	Verb	Adverb
sphinx	Yes	No	No	No
doer	Yes	No	No	No

As nouns, doer is a hypernym of sphinx; that is, doer is a word with a broader meaning than sphinx:

Other hypernyms of sphinx include actor, worker.

sphinx (noun)	doer (noun)
one of a number of large stone statues with the body of a lion and the head of a man that were built by the ancient Egyptians	a person who acts and gets things done
an inscrutable person who keeps his thoughts and intentions secret