variety vs diversity

variety and diversity both are nouns.

Word	Noun	Adjective	Verb	Adverb
variety	Yes	No	No	No
diversity	Yes	No	No	No

As nouns, variety and diversity are synonyms defined as:

Other synonyms of variety include diverseness, multifariousness.

variety (noun)	diversity (noun)
noticeable heterogeneity	the condition or result of being changeable
a difference that is usually pleasant	noticeable heterogeneity
a category of things distinguished by some common characteristic or quality
a show consisting of a series of short unrelated performances
(biology) a taxonomic category consisting of members of a species that differ from others of the same species in minor but heritable characteristics
a collection containing a variety of sorts of things