overbid vs auction

overbid and auction both are nouns.

Word	Noun	Adjective	Verb	Adverb
overbid	Yes	No	Yes	No
auction	Yes	No	Yes	No

overbid (noun)	auction (noun)
a bid that is higher than preceding bids	the public sale of something to the highest bidder
(bridge) a bid that is higher than your opponent's bid (especially when your partner has not bid at all and your bid exceeds the value of your hand)	a variety of bridge in which tricks made in excess of the contract are scored toward game; now generally superseded by contract bridge

overbid (verb)	auction (verb)
bid more than the object is worth	sell at an auction
to bid for more tricks than one can expect to win