board vs idiot light

board and idiot light both are nouns.

Word	Noun	Adjective	Verb	Adverb
board	Yes	No	Yes	No
idiot light	Yes	No	No	No

board (noun)	idiot light (noun)
a flat piece of material designed for a special purpose	a colored warning light on an instrument panel (as for low oil pressure)
a table at which meals are served
electrical device consisting of a flat insulated surface that contains switches and dials and meters for controlling other electrical devices
a vertical surface on which information can be displayed to public view
a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities
a flat portable surface (usually rectangular) designed for board games
food or meals in general
a committee having supervisory powers
a stout length of sawn timber; made in a wide variety of sizes and used for many purposes

board (verb)	idiot light (verb)
provide food and lodging (for)
lodge and take meals (at)
get on board of (trains, buses, ships, aircraft, etc.)
live and take one's meals at or in