keep vs contain

keep is a noun but contain is not a noun.

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

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

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

keep (noun)	contain (noun)
the main tower within the walls of a medieval castle or fortress
a cell in a jail or prison
the financial means whereby one lives

keep (verb)	contain (verb)
prevent (food) from rotting	hold back, as of a danger or an enemy; check the expansion or influence of
prevent the action or expression of	lessen the intensity of; temper; hold in restraint; hold or keep within limits
stick to correctly or closely	include or contain; have as a component
maintain by writing regular records	be divisible by
supply with necessities and support	contain or hold; have within
hold and prevent from leaving	be capable of holding or containing
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