rider vs bill

rider and bill both are nouns.

Word	Noun	Adjective	Verb	Adverb
rider	Yes	No	No	No
bill	Yes	No	Yes	No

rider (noun)	bill (noun)
a clause that is appended to a legislative bill	the entertainment offered at a public presentation
a traveler who actively rides an animal (as a horse or camel)	horny projecting mouth of a bird
a traveler riding in a vehicle (a boat or bus or car or plane or train etc) who is not operating it	a brim that projects to the front to shade the eyes
a traveler who actively rides a vehicle (as a bicycle or motorcycle)	a cutting tool with a sharp edge
	a sign posted in a public place as an advertisement
	an itemized statement of money owed for goods shipped or services rendered
	an advertisement (usually printed on a page or in a leaflet) intended for wide distribution
	a statute in draft before it becomes law
	a list of particulars (as a playbill or bill of fare)
	a piece of paper money (especially one issued by a central bank)

rider (verb)	bill (verb)
	advertise especially by posters or placards
	publicize or announce by placards
	demand payment