Houttuynia vs genus Houttuynia

Houttuynia and genus Houttuynia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Houttuynia	Yes	No	No	No
genus Houttuynia	Yes	No	No	No

As nouns, Houttuynia and genus Houttuynia are synonyms defined as:

Houttuynia and genus Houttuynia: one species; east Asian low-growing plant of wet places

Houttuynia (noun)	genus Houttuynia (noun)
one species; east Asian low-growing plant of wet places	one species; east Asian low-growing plant of wet places