triad vs trine

triad and trine both are nouns.

Word	Noun	Adjective	Verb	Adverb
triad	Yes	No	No	No
trine	Yes	No	No	No

As nouns, triad and trine are synonyms defined as:

triad and trine: the cardinal number that is the sum of one and one and one

triad (noun)	trine (noun)
a three-note major or minor chord; a note and its third and fifth tones	the cardinal number that is the sum of one and one and one
three people considered as a unit
a set of three similar things considered as a unit
the cardinal number that is the sum of one and one and one