Aries vs doer

Aries and doer both are nouns.

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

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

Other hypernyms of Aries include actor, worker.

Aries (noun)	doer (noun)
the first sign of the zodiac which the sun enters at the vernal equinox; the sun is in this sign from about March 21 to April 19	a person who acts and gets things done
a small zodiacal constellation in the Northern Hemisphere; between Pisces and Taurus
(astrology) a person who is born while the sun is in Aries