tam-tam vs gong

tam-tam and gong both are nouns.

Word	Noun	Adjective	Verb	Adverb
tam-tam	Yes	No	No	No
gong	Yes	No	Yes	No

As nouns, tam-tam and gong are synonyms defined as:

tam-tam and gong: a percussion instrument consisting of a metal plate that is struck with a softheaded drumstick

tam-tam (noun)	gong (noun)
a percussion instrument consisting of a metal plate that is struck with a softheaded drumstick	a percussion instrument consisting of a metal plate that is struck with a softheaded drumstick
	a percussion instrument consisting of a set of tuned bells that are struck with a hammer; used as an orchestral instrument

tam-tam (verb)	gong (verb)
	sound a gong