underbid vs auction sale

underbid is not a noun while auction sale is a noun.

Word	Noun	Adjective	Verb	Adverb
underbid	No	No	Yes	No
auction sale	Yes	No	No	No

underbid (noun)	auction sale (noun)
	the public sale of something to the highest bidder

underbid (verb)	auction sale (verb)
bid too low
bid lower than a competing bidder
bid (a hand of cards) at less than the strength of the hand warrants