Viola tricolor vs love-in-idleness

Viola tricolor and love-in-idleness both are nouns.

Word	Noun	Adjective	Verb	Adverb
Viola tricolor	Yes	No	No	No
love-in-idleness	Yes	No	No	No

As nouns, Viola tricolor and love-in-idleness are synonyms defined as:

Viola tricolor and love-in-idleness: a common and long cultivated European herb from which most common garden pansies are derived

Other synonyms of Viola tricolor include heartsease, Johnny-jump-up, pink of my John, wild pansy.

Viola tricolor (noun)	love-in-idleness (noun)
a common and long cultivated European herb from which most common garden pansies are derived	a common and long cultivated European herb from which most common garden pansies are derived