Disparity is a synonym of dissimilarity.
As nouns the difference between dissimilarity and disparity
is that dissimilarity is lack of similarity or lack of likeness in appearance to something else while disparity is the state of being unequal; difference.
dissimilarity
English
Noun
(dissimilarities)
lack of similarity or lack of likeness in appearance to something else
Antonyms
* similarity
disparity
English
Noun
(uncountable) the state of being unequal; difference
incongruity
Synonyms
*