Viola arvensis vs field pansy

Viola arvensis and field pansy both are nouns.

Word	Noun	Adjective	Verb	Adverb
Viola arvensis	Yes	No	No	No
field pansy	Yes	No	No	No

As nouns, Viola arvensis and field pansy are synonyms defined as:

Viola arvensis and field pansy: common Old World viola with creamy often violet-tinged flowers

Other synonyms of Viola arvensis include heartsease.

Viola arvensis (noun)	field pansy (noun)
common Old World viola with creamy often violet-tinged flowers	common Old World viola with creamy often violet-tinged flowers