boarding vs boards

boarding and boards both are nouns.

Word	Noun	Adjective	Verb	Adverb
boarding	Yes	No	No	No
boards	Yes	No	No	No

As nouns, boards is a hyponym of boarding; that is, boards is a word with a more specific, narrower meaning than boarding:

Other hyponyms of boarding include flashboard, flashboarding.

boarding (noun)	boards (noun)
the act of passengers and crew getting aboard a ship or aircraft	(used in the plural) the boarding that surrounds an ice hockey rink
a structure of boards	(used in the plural) the stage of a theater