genus Tanacetum vs Tanacetum

genus Tanacetum and Tanacetum both are nouns.

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

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

genus Tanacetum and Tanacetum: a large genus of plants resembling chrysanthemums; comprises some plants often included in other genera especially genus Chrysanthemum

genus Tanacetum (noun)	Tanacetum (noun)
a large genus of plants resembling chrysanthemums; comprises some plants often included in other genera especially genus Chrysanthemum	a large genus of plants resembling chrysanthemums; comprises some plants often included in other genera especially genus Chrysanthemum