Knightia vs magnoliopsid genus

Knightia and magnoliopsid genus both are nouns.

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

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

Knightia: small genus of trees or shrubs of New Zealand and New Caledonia
magnoliopsid genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Knightia include dicot genus.

Knightia (noun)	magnoliopsid genus (noun)
small genus of trees or shrubs of New Zealand and New Caledonia	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination