The etymology of board - the verb associated with getting on a plane comes from maritime terms. Unexpectedly, the term does not come from the plank of wood used to cross over to a ship. The term comes from “side of a ship” (eg, starboard). Board - the noun associated with eating (ie, room and board) is associated with the wooden plank that one was served food upon (ie, a table).

You can buy the Jenkins Comic’s book here.