The difference between Contain and Vent

When used as verbs, contain means to hold inside, whereas vent means to allow gases to escape.

Vent is also noun with the meaning: an opening through which gases, especially air, can pass.

check bellow for the other definitions of Contain and Vent

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.

Vent as a noun:

An opening through which gases, especially air, can pass.

Examples:

"the vent of a cask; the vent of a mould"
Vent as a noun:

A small aperture.
Vent as a noun:

The opening of a volcano from which lava flows.
Vent as a noun:

A verbalized frustration.
Vent as a noun:

The excretory opening of lower orders of vertebrates.
Vent as a noun:

A slit in the seam of a garment.
Vent as a noun:

The opening at the breech of a firearm, through which fire is communicated to the powder of the charge; touchhole.
Vent as a noun:

In steam boilers, a sectional area of the passage for gases divided by the length of the same passage in feet.
Vent as a noun:

Opportunity of escape or passage from confinement or privacy; outlet.
Vent as a noun:

Emission; escape; passage to notice or expression; publication; utterance.

Vent as a verb (intransitive):

To allow gases to escape.

Examples:

"The stove vents to the outside."
Vent as a verb (transitive):

To allow to escape through a vent.

Examples:

"Exhaust is vented to the outside."
Vent as a verb (transitive, intransitive):

To express a strong emotion.

Examples:

"He vents his anger violently."

"Can we talk? I need to vent."
Vent as a verb:

To snuff; to breathe or puff out; to snort.

Examples:

"rfquotek Spenser"

Vent as a noun:

sale; opportunity to sell; market

Examples:

"rfquotek Shelton"

Vent as a noun (medicine, colloquial):

Ventilation or ventilator.

Examples:

"vent settings"