The difference between Decrease and Shrink

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

When used as verbs, decrease means of a quantity, to become smaller, whereas shrink means to cause to become smaller.

check bellow for the other definitions of Decrease and Shrink

Decrease as a noun:

An amount by which a quantity is decreased.

Examples:

"One research team has recorded Baishui’s decrease at about 27 meters per year over the last 10 years.'' [[File:One research team has recorded Baishui’s decrease.ogg]]"
Decrease as a noun (knitting):

A reduction in the number of stitches, usually accomplished by suspending the stitch to be decreased from another existing stitch or by knitting it together with another stitch. 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.