razz vs banter

razz and banter both are nouns.

Word	Noun	Adjective	Verb	Adverb
razz	Yes	No	Yes	No
banter	Yes	No	Yes	No

As verbs, banter is a hyponym of razz; that is, banter is a word with a more specific, narrower meaning than razz:

Other hyponyms of razz include barrack, flout, gibe, jeer, scoff, chaff, jolly, josh, kid.

razz (noun)	banter (noun)
a cry or noise made to express displeasure or contempt	light teasing repartee

razz (verb)	banter (verb)
harass with persistent criticism or carping	be silly or tease one another