Asclepias vs magnoliopsid genus

Asclepias and magnoliopsid genus both are nouns.

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

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

Asclepias: genus of chiefly North American perennial herbs: silkweed; milkweed
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Asclepias include dicot genus.

Asclepias (noun)	magnoliopsid genus (noun)
genus of chiefly North American perennial herbs: silkweed; milkweed	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination