unlikeness vs dissimilitude

unlikeness and dissimilitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
unlikeness	Yes	No	No	No
dissimilitude	Yes	No	No	No

As nouns, unlikeness and dissimilitude are synonyms defined as:

unlikeness and dissimilitude: dissimilarity evidenced by an absence of likeness

unlikeness (noun)	dissimilitude (noun)
dissimilarity evidenced by an absence of likeness	dissimilarity evidenced by an absence of likeness