love-in-a-mist vs Nigella damascena

love-in-a-mist and Nigella damascena both are nouns.

Word	Noun	Adjective	Verb	Adverb
love-in-a-mist	Yes	No	No	No
Nigella damascena	Yes	No	No	No

As nouns, love-in-a-mist and Nigella damascena are synonyms defined as:

love-in-a-mist and Nigella damascena: European garden plant having finely cut leaves and white or pale blue flowers

love-in-a-mist (noun)	Nigella damascena (noun)
tropical American passion flower with finely dissected bracts; stems malodorous when crushed	European garden plant having finely cut leaves and white or pale blue flowers
chickweed with hairy silver-grey leaves and rather large white flowers
European garden plant having finely cut leaves and white or pale blue flowers