Difference between Insufficient and Scarce

INSUFFICIENT vs SCARCE: ADJECTIVE

Not sufficient; inadequate.
Of a quantity not able to fulfill a need or requirement
Not sufficient; not enough; inadequate to any need, use, or purpose.
Wanting in strength, power, ability, capacity, or skill; incompetent; incapable; unfit.
Not sufficient.

Not enough; hard to find
Deficient in quantity or number compared with the demand
Insufficient to meet a demand or requirement; short in supply.
Hard to find; absent or rare.
Uncommon, rare; difficult to find; insufficient to meet a demand.
To decamp; to depart.
Sparing; frugal; parsimonious; stingy.
Scantily supplied (with); deficient (in); -- with of.
Not plentiful or abundant; in small quantity in proportion to the demand; not easily to be procured; rare; uncommon.

Not sufficient; lacking in what is necessary or required; deficient in amount, force, or fitness; inadequate; incompetent: as, insufficient provision or protection; insufficient motives.

To make less; diminish; make scant.
Hardly; barely; scarcely.
Sparing; parsimonious; niggard; niggardly; stingy.
Scantily supplied; poorly provided; not having much: sometimes with of.
Diminished; reduced from the original or the proper size or measure; deficient; short.
Deficient in quantity or number; insufficient for the need or demand; scant; scanty; not abundant.
Few in number; seldom seen; infrequent; uncommon; rare: as, scarce coins; a scarce book.
Characterized by scarcity, especially of provisions, or the necessaries of life.
Synonyms and Rare, Scarce. See rare.
Almost not
(idiom) (make (oneself) scarce) To stay away; be absent or elusive.
(idiom) (make (oneself) scarce) To depart, especially quickly or furtively; abscond.

Adequate, Sufficient, Shy, Too little, Lean, Light, Short, Low, Depleted, Skimpy, Poor, Scarce, Scant, Deficient, Inadequate

Precious, Scanty, Shortages, Finite, Sparse, Scarcity, Abundant, Just, Barely, Scarcely, Hardly, Deficient, Tight, Rare, Insufficient

Adequate, Sufficient, Too little, Shy, Lean, Light, Short, Low, Depleted, Skimpy, Poor, Scarce, Scant, Deficient, Inadequate

Scant, Precious, Scanty, Shortages, Finite, Sparse, Abundant, Just, Barely, Scarcely, Hardly, Deficient, Tight, Rare, Insufficient

Offers with insufficient information are liable to rejection.
Insufficient number of arguments or no entry found.
Insufficient attributes were given to create an object.
Mere knowledge of likelihood is legally insufficient proof.
Bank and the amount of interest was insufficient.
If there are insufficient facts in the affidavit there may be insufficient evidence for the Court to come to the desired finding.
If we return a postdated item because of insufficient funds in your Account, you will be subject to the insufficient funds penalty.
TKis causes insufficient voltage at motor induction and results in excessive output current but insufficient output torque.
Evidence was insufficient if there were no relevant trials or data were insufficient.
An insufficient sacrifice could not justify those who suffer from insufficient righteousness.

Nevertheless, reddy tin is scarce, and bills abound.
Extended flat areas preferred for airports are scarce.
Seems IP addresses are an scarce resource nowadays.
CLABSI prevention program, especially if resources are scarce.
Mexican curb could scarce control when once aroused.
But, resources that satisfy human wants are scarce.
They were a scarce resource because of government regulation and, as with all scarce resources, they become expensive.
As something becomes more scarce or less scarce, the desire for it does not change in a proportionate way.
Hardin argues that just like space on a lifeboat is scarce, resources are similarly scarce.
This follows from the nature of scarce goods and scarce factors.