The difference between Increase and Shrink

When used as nouns, increase means an amount by which a quantity is increased, whereas shrink means shrinkage.

When used as verbs, increase means (of a quantity, etc.) to become larger or greater, whereas shrink means to cause to become smaller.

check bellow for the other definitions of Increase and Shrink

Increase as a verb (intransitive):

(of a quantity, etc.) To become larger or greater.

Examples:

"His rage only increased when I told him of the lost money."
Increase as a verb (transitive):

To make (a quantity, etc.) larger.
Increase as a verb:

To multiply by the production of young; to be fertile, fruitful, or prolific.
Increase as a verb (astronomy, intransitive):

To become more nearly full; to show more of the surface; to wax.

Examples:

"The Moon increases."

Increase as a noun:

An amount by which a quantity is increased.
Increase as a noun:

For a quantity, the act or process of becoming larger
Increase as a noun (knitting):

The creation of one or more new stitches; see .

Shrink as a verb (transitive):

To cause to become smaller.

Examples:

"The dryer shrank my sweater."
Shrink as a verb (intransitive):

To become smaller; to contract.

Examples:

"This garment will shrink when wet."
Shrink as a verb (intransitive):

To cower or flinch.

Examples:

"Molly shrank away from the blows of the whip."
Shrink as a verb (transitive):

To draw back; to withdraw.
Shrink as a verb (intransitive, figuratively):

To withdraw or retire, as from danger.
Shrink as a verb (intransitive):

To move back or away, especially because of fear or disgust.

Shrink as a noun:

Shrinkage; contraction; recoil.
Shrink as a noun (slang, sometimes, pejorative):

A psychiatrist or psychotherapist.

Examples:

"You need to see a shrink."

"My shrink said that he was an enabler, bad for me."

"synonyms: head-shrinker"
Shrink as a noun (uncountable, business):

Loss of inventory, for example due to shoplifting or not selling items before their expiration date.