trilateral vs triangle

trilateral and triangle both are nouns.

Word	Noun	Adjective	Verb	Adverb
trilateral	Yes	Yes	No	No
triangle	Yes	No	No	No

As nouns, trilateral and triangle are synonyms defined as:

Other synonyms of trilateral include trigon.

trilateral (noun)	triangle (noun)
a three-sided polygon	a percussion instrument consisting of a metal bar bent in the shape of an open triangle
	any of various triangular drafting instruments used to draw straight lines at specified angles
	a three-sided polygon
	something approximating the shape of a triangle

trilateral (adjective)	triangle (adjective)
having three sides
involving three parties