Gorgon vs Euryale

Gorgon and Euryale both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gorgon	Yes	No	No	No
Euryale	Yes	No	No	No

As nouns, Euryale is a hyponym of Gorgon; that is, Euryale is a word with a more specific, narrower meaning than Gorgon:

Gorgon: (Greek mythology) any of three winged sister monsters and the mortal Medusa who had live snakes for hair; a glance at Medusa turned the beholder to stone
Euryale: (Greek mythology) the second eldest of the three Gorgons

Other hyponyms of Gorgon include Medusa, Stheno.

Gorgon (noun)	Euryale (noun)
(Greek mythology) any of three winged sister monsters and the mortal Medusa who had live snakes for hair; a glance at Medusa turned the beholder to stone	basket stars
	(Greek mythology) the second eldest of the three Gorgons