council table vs council board

council table and council board both are nouns.

Word	Noun	Adjective	Verb	Adverb
council table	Yes	No	No	No
council board	Yes	No	No	No

As nouns, council table and council board are synonyms defined as:

council table and council board: the table that conferees sit around as they hold a meeting

Other synonyms of council table include conference table.

council table (noun)	council board (noun)
the table that conferees sit around as they hold a meeting	the table that conferees sit around as they hold a meeting