Ping-Pong vs table tennis

Ping-Pong and table tennis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ping-Pong	Yes	No	No	No
table tennis	Yes	No	No	No

As nouns, Ping-Pong and table tennis are synonyms defined as:

Ping-Pong and table tennis: a game (trademark Ping-Pong) resembling tennis but played on a table with paddles and a light hollow ball

Other synonyms of Ping-Pong include ping pong.

Ping-Pong (noun)	table tennis (noun)
a game (trademark Ping-Pong) resembling tennis but played on a table with paddles and a light hollow ball	a game (trademark Ping-Pong) resembling tennis but played on a table with paddles and a light hollow ball