love-in-idleness vs Viola tricolor

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

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

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

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

Other synonyms of love-in-idleness include heartsease, Johnny-jump-up, pink of my John, wild pansy.

love-in-idleness (noun)	Viola tricolor (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