trinity vs tierce

trinity and tierce both are nouns.

Word	Noun	Adjective	Verb	Adverb
trinity	Yes	No	No	No
tierce	Yes	No	No	No

As nouns, trinity and tierce are synonyms defined as:

trinity and tierce: the cardinal number that is the sum of one and one and one

Other synonyms of trinity include 3, deuce-ace, III, leash, tercet, ternary, ternion, terzetto, three, threesome, trey, triad, trine, trio, triplet, troika.

trinity (noun)	tierce (noun)
three people considered as a unit	one of three equal parts of a divisible whole
the cardinal number that is the sum of one and one and one	the cardinal number that is the sum of one and one and one
	the third canonical hour; about 9 a.m.