Zigadenus vs genus Zigadenus

Zigadenus and genus Zigadenus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Zigadenus	Yes	No	No	No
genus Zigadenus	Yes	No	No	No

As nouns, Zigadenus and genus Zigadenus are synonyms defined as:

Zigadenus and genus Zigadenus: genus of mostly North American poisonous plants; sometimes placed in family Melanthiaceae

Zigadenus (noun)	genus Zigadenus (noun)
genus of mostly North American poisonous plants; sometimes placed in family Melanthiaceae	genus of mostly North American poisonous plants; sometimes placed in family Melanthiaceae