two-eyed violet vs violet

two-eyed violet and violet both are nouns.

Word	Noun	Adjective	Verb	Adverb
two-eyed violet	Yes	No	No	No
violet	Yes	Yes	No	No

As nouns, violet is a hypernym of two-eyed violet; that is, violet is a word with a broader meaning than two-eyed violet:

two-eyed violet: violet of Pacific coast of North America having white petals tinged with yellow and deep violet
violet: any of numerous low-growing violas with small flowers

two-eyed violet (noun)	violet (noun)
violet of Pacific coast of North America having white petals tinged with yellow and deep violet	a variable color that lies beyond blue in the spectrum
	any of numerous low-growing violas with small flowers

two-eyed violet (adjective)	violet (adjective)
	of a color intermediate between red and blue