Saururus vs magnoliopsid genus

Saururus and magnoliopsid genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Saururus	Yes	No	No	No
magnoliopsid genus	Yes	No	No	No

As nouns, magnoliopsid genus is a hypernym of Saururus; that is, magnoliopsid genus is a word with a broader meaning than Saururus:

Saururus: type genus of the Saururaceae: lizard's-tails
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Saururus include dicot genus.

Saururus (noun)	magnoliopsid genus (noun)
type genus of the Saururaceae: lizard's-tails	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination