request vs bid

request and bid both are nouns.

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

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

Other hyponyms of request include enjoin, order, say, tell, call, invite, declare oneself, offer, pop the question, propose.

request (noun)	bid (noun)
the verbal act of requesting	an attempt to get something
a formal message requesting something that is submitted to an authority	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

request (verb)	bid (verb)
express the need or desire for	ask someone in a friendly way to do something
ask (a person) to do something	invoke upon
inquire for (information)	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