trigon vs triplicity

trigon and triplicity both are nouns.

Word	Noun	Adjective	Verb	Adverb
trigon	Yes	No	No	No
triplicity	Yes	No	No	No

As nouns, trigon and triplicity are synonyms defined as:

trigon and triplicity: (astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees

trigon (noun)	triplicity (noun)
a triangular lyre of ancient Greece and Rome	the property of being triple
(astrology) one of four groups of the zodiac where each group consists of three signs separated from each other by 120 degrees	(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