Scorpio vs doer

Scorpio and doer both are nouns.

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

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

Other hypernyms of Scorpio include actor, worker.

Scorpio (noun)	doer (noun)
the eighth sign of the zodiac; the sun is in this sign from about October 23 to November 21	a person who acts and gets things done
a large zodiacal constellation between Libra and Sagittarius
(astrology) a person who is born while the sun is in Scorpio