quarrelsomeness vs contentiousness

quarrelsomeness and contentiousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
quarrelsomeness	Yes	No	No	No
contentiousness	Yes	No	No	No

As nouns, quarrelsomeness and contentiousness are synonyms defined as:

quarrelsomeness and contentiousness: an inclination to be quarrelsome and contentious

quarrelsomeness (noun)	contentiousness (noun)
an inclination to be quarrelsome and contentious	an inclination to be quarrelsome and contentious