bidding vs commission

bidding and commission both are nouns.

Word	Noun	Adjective	Verb	Adverb
bidding	Yes	No	No	No
commission	Yes	No	Yes	No

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

Other hyponyms of bidding include countermand, order, charge, direction, commandment, injunction, behest, open sesame.

bidding (noun)	commission (noun)
a request to be present	a special assignment that is given to a person or group
(bridge) the number of tricks a bridge player is willing to contract to make	the act of committing a crime
an authoritative direction or instruction to do something	the act of granting authority to undertake certain functions
	an official document issued by a government and conferring on the recipient the rank of an officer in the armed forces
	a formal statement of a command or injunction to do something
	a special group delegated to consider some matter
	a group of representatives or delegates
	a fee for services rendered based on a percentage of an amount received or collected or agreed to be paid (as distinguished from a salary)
	the state of being in good working order and ready for operation

bidding (verb)	commission (verb)
	charge with a task
	put into commission; equip for service; of ships
	place an order for