ping-pong table vs table-tennis table

ping-pong table and table-tennis table both are nouns.

Word	Noun	Adjective	Verb	Adverb
ping-pong table	Yes	No	No	No
table-tennis table	Yes	No	No	No

As nouns, ping-pong table and table-tennis table are synonyms defined as:

ping-pong table and table-tennis table: a table used for playing table tennis

Other synonyms of ping-pong table include pingpong table.

ping-pong table (noun)	table-tennis table (noun)
a table used for playing table tennis	a table used for playing table tennis