Colchicum autumnale vs autumn crocus

Colchicum autumnale and autumn crocus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Colchicum autumnale	Yes	No	No	No
autumn crocus	Yes	No	No	No

As nouns, Colchicum autumnale and autumn crocus are synonyms defined as:

Colchicum autumnale and autumn crocus: bulbous autumn-flowering herb with white, purple or lavender-and-white flowers; native to western and central Europe

Other synonyms of Colchicum autumnale include meadow saffron, naked lady.

Colchicum autumnale (noun)	autumn crocus (noun)
bulbous autumn-flowering herb with white, purple or lavender-and-white flowers; native to western and central Europe	bulbous autumn-flowering herb with white, purple or lavender-and-white flowers; native to western and central Europe