razzing vs razz

razzing and razz both are nouns.

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

As nouns, razzing and razz are synonyms defined as:

razzing and razz: a cry or noise made to express displeasure or contempt

Other synonyms of razzing include bird, boo, Bronx cheer, hiss, hoot, raspberry, snort.

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

razzing (verb)	razz (verb)
	harass with persistent criticism or carping