bid vs countermand

bid and countermand both are nouns.

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

As nouns, countermand is a hyponym of bid; that is, countermand is a word with a more specific, narrower meaning than bid:

Other hyponyms of bid include order, charge, commission, direction, commandment, injunction, behest, open sesame.

bid (noun)	countermand (noun)
an attempt to get something	a contrary command cancelling or reversing a previous command
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

bid (verb)	countermand (verb)
ask someone in a friendly way to do something	cancel officially
invoke upon
ask for or request earnestly
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