Amsonia vs dicot genus

Amsonia and dicot genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Amsonia	Yes	No	No	No
dicot genus	Yes	No	No	No

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

Amsonia: genus of herbs and subshrubs with milky juice and showy bluish flowers; Europe to Asia Minor to Japan and North America
dicot genus: genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination

Other hypernyms of Amsonia include magnoliopsid genus.

Amsonia (noun)	dicot genus (noun)
genus of herbs and subshrubs with milky juice and showy bluish flowers; Europe to Asia Minor to Japan and North America	genus of flowering plants having two cotyledons (embryonic leaves) in the seed which usually appear at germination