fraternise vs socialize

fraternise and socialize both are verbs.

Word	Noun	Adjective	Verb	Adverb
fraternise	No	No	Yes	No
socialize	No	No	Yes	No

As verbs, socialize is a hypernym of fraternise; that is, socialize is a word with a broader meaning than fraternise:

fraternise: be on friendly terms with someone, as if with a brother, especially with an enemy
socialize: take part in social activities; interact with others

Other hypernyms of fraternise include socialise.

fraternise (verb)	socialize (verb)
be on friendly terms with someone, as if with a brother, especially with an enemy	make conform to socialist ideas and philosophies
	prepare for social life
	train for a social environment
	take part in social activities; interact with others