scalene vs scalene triangle

scalene is not a noun while scalene triangle is a noun.

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

scalene (noun)	scalene triangle (noun)
	a triangle with no two sides of equal length

scalene (adjective)	scalene triangle (adjective)
of or relating to any of the scalene muscles
of a triangle having three sides of different lengths