pingpong table vs table-tennis table

pingpong table and table-tennis table both are nouns.

Word	Noun	Adjective	Verb	Adverb
pingpong table	Yes	No	No	No
table-tennis table	Yes	No	No	No

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

pingpong table and table-tennis table: a table used for playing table tennis

Other synonyms of pingpong table include ping-pong table.

pingpong table (noun)	table-tennis table (noun)
a table used for playing table tennis	a table used for playing table tennis