pink of my John vs love-in-idleness

pink of my John and love-in-idleness both are nouns.

Word	Noun	Adjective	Verb	Adverb
pink of my John	Yes	No	No	No
love-in-idleness	Yes	No	No	No

As nouns, pink of my John and love-in-idleness are synonyms defined as:

pink of my John and love-in-idleness: a common and long cultivated European herb from which most common garden pansies are derived

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

pink of my John (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