The difference between Contain and Restrict

When used as verbs, contain means to hold inside, whereas restrict means to restrain within boundaries.

Restrict is also adjective with the meaning: restricted.

check bellow for the other definitions of Contain and Restrict

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.

Restrict as a verb:

To restrain within boundaries; to limit; to confine

Examples:

"After suffering diahrroea, the patient was restricted to a diet of rice, cold meat, and yoghurt."
Restrict as a verb (specifically, mathematics):

To consider (a function) as defined on a subset of its original domain.

Examples:

"If we restrict sine to <math>[-\frac\pi2,\frac\pi2]</math>, we can define its inverse."