board rule vs measuring stick

board rule and measuring stick both are nouns.

Word	Noun	Adjective	Verb	Adverb
board rule	Yes	No	No	No
measuring stick	Yes	No	No	No

As nouns, measuring stick is a hypernym of board rule; that is, measuring stick is a word with a broader meaning than board rule:

board rule: a measure used in computing board feet
measuring stick: measuring instrument having a sequence of marks at regular intervals; used as a reference in making measurements

Other hypernyms of board rule include measure, measuring rod.

board rule (noun)	measuring stick (noun)
a measure used in computing board feet	measuring instrument having a sequence of marks at regular intervals; used as a reference in making measurements