Johnny-jump-up vs love-in-idleness

Johnny-jump-up and love-in-idleness both are nouns.

Word	Noun	Adjective	Verb	Adverb
Johnny-jump-up	Yes	No	No	No
love-in-idleness	Yes	No	No	No

As nouns, Johnny-jump-up and love-in-idleness are synonyms defined as:

Johnny-jump-up and love-in-idleness: a common and long cultivated European herb from which most common garden pansies are derived

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

Johnny-jump-up (noun)	love-in-idleness (noun)
common violet of the eastern United States with large pale blue or purple flowers resembling pansies	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