Tanacetum vs genus Tanacetum

Tanacetum and genus Tanacetum both are nouns.

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

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

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

Tanacetum (noun)	genus 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