razz vs josh

razz is a noun but josh is not a noun.

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

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

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

razz (noun)	josh (noun)
a cry or noise made to express displeasure or contempt

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