preempt vs bid

preempt and bid both are nouns.

Word	Noun	Adjective	Verb	Adverb
preempt	Yes	No	Yes	No
bid	Yes	No	Yes	No

As nouns, bid is a hypernym of preempt; that is, bid is a word with a broader meaning than preempt:

preempt: a high bid that is intended to prevent the opposing players from bidding
bid: (bridge) the number of tricks a bridge player is willing to contract to make

Other hypernyms of preempt include bidding.

As verbs, bid is a hypernym of preempt; that is, bid is a word with a broader meaning than preempt:

Other hypernyms of preempt include call.

preempt (noun)	bid (noun)
a high bid that is intended to prevent the opposing players from bidding	an attempt to get something
	a formal proposal to buy at a specified price
	(bridge) the number of tricks a bridge player is willing to contract to make
	an authoritative direction or instruction to do something

preempt (verb)	bid (verb)
acquire for oneself before others can do so	ask someone in a friendly way to do something
make a preemptive bid in the game of bridge	invoke upon
gain possession of by prior right or opportunity, especially so as to obtain the right to buy (land)	ask for or request earnestly
take the place of or have precedence over	propose a payment
	make a demand, as for a card or a suit or a show of hands
	make a serious effort to attain something