by-bid vs bid

by-bid is not a noun while bid is a noun.

Word	Noun	Adjective	Verb	Adverb
by-bid	No	No	Yes	No
bid	Yes	No	Yes	No

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

Other hypernyms of by-bid include offer, tender.

by-bid (noun)	bid (noun)
	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

by-bid (verb)	bid (verb)
bid on behalf of someone else	ask someone in a friendly way to do something
	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