The difference between Contain and Curb

When used as verbs, contain means to hold inside, whereas curb means to check, restrain or control.

Curb is also noun with the meaning: a concrete margin along the edge of a road.

check bellow for the other definitions of Contain and Curb

Contain as a verb (transitive):

To hold inside.
Contain as a verb (transitive):

To include as a part.
Contain as a verb (transitive):

To put constraint upon; to restrain; to confine; to keep within bounds.

Examples:

"I'm so excited, I can hardly contain myself!"
Contain as a verb (mathematics, of a [[set]] etc., transitive):

To have as an element or subset.

Examples:

"A group contains a unique inverse for each of its elements."

"If that subgraph contains the vertex in question then it must be spanning."
Contain as a verb (obsolete, intransitive):

To restrain desire; to live in continence or chastity.

Curb as a noun (North America):

A concrete margin along the edge of a road; a kerb (UK)
Curb as a noun:

A raised margin along the edge of something, such as a well or the eye of a dome, as a strengthening.
Curb as a noun:

Something that checks or restrains; a restraint.
Curb as a noun:

A riding or driving bit for a horse that has rein action which amplifies the pressure in the mouth by leverage advantage placing pressure on the poll via the crown piece of the bridle and chin groove via a curb chain.
Curb as a noun (North America):

A sidewalk, covered or partially enclosed, bordering the airport terminal road system with an adjacent paved areas to permit vehicles to off-load or load passengers.
Curb as a noun:

A swelling on the back part of the hind leg of a horse, just behind the lowest part of the hock joint, generally causing lameness.

Curb as a verb (transitive):

To check, restrain or control.
Curb as a verb (transitive):

To rein in.
Curb as a verb (transitive):

To furnish with a curb, as a well; to restrain by a curb, as a bank of earth.
Curb as a verb (transitive):

To force to "bite the curb" (hit the pavement curb); see curb stomp.
Curb as a verb (transitive):

To damage vehicle wheels or tires by running into or over a pavement curb.
Curb as a verb (transitive):

To bend or curve.
Curb as a verb (intransitive):

To crouch; to cringe.