difference vs variety

difference and variety both are nouns.

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

As nouns, variety is a hyponym of difference; that is, variety is a word with a more specific, narrower meaning than difference:

difference (noun)	variety (noun)
the quality of being unlike or dissimilar	noticeable heterogeneity
a disagreement or argument about something important	a difference that is usually pleasant
a variation that deviates from the standard or norm	a category of things distinguished by some common characteristic or quality
the number that remains after subtraction; the number that when added to the subtrahend gives the minuend	a show consisting of a series of short unrelated performances
a significant change	(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