butter-and-eggs vs devil's flax

butter-and-eggs and devil's flax both are nouns.

Word	Noun	Adjective	Verb	Adverb
butter-and-eggs	Yes	No	No	No
devil's flax	Yes	No	No	No

As nouns, butter-and-eggs and devil's flax are synonyms defined as:

butter-and-eggs and devil's flax: common European perennial having showy yellow and orange flowers; a naturalized weed in North America

Other synonyms of butter-and-eggs include Linaria vulgaris, toadflax, wild snapdragon.

butter-and-eggs (noun)	devil's flax (noun)
common European perennial having showy yellow and orange flowers; a naturalized weed in North America	common European perennial having showy yellow and orange flowers; a naturalized weed in North America