billiard table vs snooker table

billiard table

noun
  • A heavy felt-covered table fitted with six pockets along the perimeter used in the games of pool, billiards or snooker. 

snooker table

noun
  • The table on which snooker or billiards is played; a billiard table 

How often have the words billiard table and snooker table occurred in a corpus of books? (source: Google Ngram Viewer )