equilateral triangle vs trigon

equilateral triangle and trigon both are nouns.

Word	Noun	Adjective	Verb	Adverb
equilateral triangle	Yes	No	No	No
trigon	Yes	No	No	No

As nouns, trigon is a hypernym of equilateral triangle; that is, trigon is a word with a broader meaning than equilateral triangle:

Other hypernyms of equilateral triangle include regular polygon, triangle, trilateral.

equilateral triangle (noun)	trigon (noun)
a three-sided regular polygon	a triangular lyre of ancient Greece and Rome
	(astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees
	a three-sided polygon