genus Languas vs plant genus

genus Languas and plant genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Languas	Yes	No	No	No
plant genus	Yes	No	No	No

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

genus Languas: perennial rhizomatous herbs of Asia and Australia and Polynesia having ginger-scented rhizomes
plant genus: a genus of plants

genus Languas (noun)	plant genus (noun)
perennial rhizomatous herbs of Asia and Australia and Polynesia having ginger-scented rhizomes	a genus of plants