razz vs boo

razz and boo both are nouns.

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

As nouns, razz and boo are synonyms defined as:

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

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

razz (verb)	boo (verb)
harass with persistent criticism or carping	show displeasure, as after a performance or speech