distinctness vs severalty

distinctness and severalty both are nouns.

Word	Noun	Adjective	Verb	Adverb
distinctness	Yes	No	No	No
severalty	Yes	No	No	No

As nouns, distinctness and severalty are synonyms defined as:

Other synonyms of distinctness include discreteness, separateness.

distinctness (noun)	severalty (noun)
the quality of being sharp and clear	exclusive individual ownership
the quality of being not alike; being distinct or different from that otherwise experienced or known	the state of being several and distinct
the state of being several and distinct