continuousness vs incessancy

continuousness and incessancy both are nouns.

Word	Noun	Adjective	Verb	Adverb
continuousness	Yes	No	No	No
incessancy	Yes	No	No	No

As nouns, continuousness and incessancy are synonyms defined as:

continuousness and incessancy: the quality of something that continues without end or interruption

Other synonyms of continuousness include ceaselessness, incessantness.

continuousness (noun)	incessancy (noun)
the quality of something that continues without end or interruption	the quality of something that continues without end or interruption