cuckoo flower vs Lychins floscuculi

cuckoo flower and Lychins floscuculi both are nouns.

Word	Noun	Adjective	Verb	Adverb
cuckoo flower	Yes	No	No	No
Lychins floscuculi	Yes	No	No	No

As nouns, cuckoo flower and Lychins floscuculi are synonyms defined as:

cuckoo flower and Lychins floscuculi: common perennial native to Europe and western Asia having usually pink flowers with ragged petals

Other synonyms of cuckoo flower include Lychnis flos-cuculi, ragged robin.

cuckoo flower (noun)	Lychins floscuculi (noun)
common perennial native to Europe and western Asia having usually pink flowers with ragged petals	common perennial native to Europe and western Asia having usually pink flowers with ragged petals
a bitter cress of Europe and America