belligerence vs aggressiveness

belligerence and aggressiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
belligerence	Yes	No	No	No
aggressiveness	Yes	No	No	No

As nouns, belligerence and aggressiveness are synonyms defined as:

Other synonyms of belligerence include pugnacity.

belligerence (noun)	aggressiveness (noun)
a natural disposition to be hostile	the quality of being bold and enterprising
hostile or warlike attitude or nature	a natural disposition to be hostile
	a feeling of hostility that arouses thoughts of attack