red-skinned onion vs Allium haematochiton

red-skinned onion and Allium haematochiton both are nouns.

Word	Noun	Adjective	Verb	Adverb
red-skinned onion	Yes	No	No	No
Allium haematochiton	Yes	No	No	No

As nouns, red-skinned onion and Allium haematochiton are synonyms defined as:

red-skinned onion and Allium haematochiton: onion with white to deep red tunic; California

red-skinned onion (noun)	Allium haematochiton (noun)
onion with white to deep red tunic; California	onion with white to deep red tunic; California