keep vs curb

keep and curb both are nouns.

Word	Noun	Adjective	Verb	Adverb
keep	Yes	No	Yes	No
curb	Yes	No	Yes	No

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

keep: prevent the action or expression of
curb: lessen the intensity of; temper; hold in restraint; hold or keep within limits

keep (noun)	curb (noun)
the main tower within the walls of a medieval castle or fortress	the act of restraining power or action or limiting excess
a cell in a jail or prison	an edge between a sidewalk and a roadway consisting of a line of curbstones (usually forming part of a gutter)
the financial means whereby one lives	a horse's bit with an attached chain or strap to check the horse

keep (verb)	curb (verb)
prevent (food) from rotting	place restrictions on
prevent the action or expression of	keep to the curb
stick to correctly or closely	lessen the intensity of; temper; hold in restraint; hold or keep within limits
maintain by writing regular records
supply with necessities and support
hold and prevent from leaving
retain possession of
look after; be the keeper of; have charge of
retain rights to
maintain for use and service
have as a supply
store or keep customarily
stop (someone or something) from doing something or being in a certain state
allow to remain in a place or position or maintain a property or feature
conform one's action or practice to
behave as expected during of holidays or rites
cause to continue in a certain state, position, or activity
supply with room and board
maintain in safety from injury, harm, or danger
fail to spoil or rot
continue a certain state, condition, or activity
to rear