The difference between Contain and Exclude

When used as verbs, contain means to hold inside, whereas exclude means to bar (someone) from entering.

check bellow for the other definitions of Contain and Exclude

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.

Exclude as a verb (transitive):

To bar (someone) from entering; to keep out.
Exclude as a verb (transitive):

To expel; to put out.

Examples:

"to exclude young animals from the womb or from eggs"
Exclude as a verb (transitive):

To omit from consideration.

Examples:

"Count from 1 to 30, but exclude the prime numbers."
Exclude as a verb (transitive, legal):

To refuse to accept (evidence) as valid.
Exclude as a verb (transitive, medicine):

To eliminate from diagnostic consideration.