As adjectives the difference between circumstantial and unexpected

is that circumstantial is pertaining to or dependent on circumstances, especially as opposed to essentials; incidental, not essential while unexpected is not expected, anticipated or foreseen.

As a noun circumstantial

is (chiefly|in the plural) something incidental to the main subject, but of less importance.

As a proper noun plenty

is a village in saskatchewan, canada.

As a noun frog is

a small tailless amphibian of the order anura that typically hops or frog can be (offensive) a french person or frog can be a leather or fabric loop used to attach a sword or bayonet, or its scabbard, to a waist or shoulder belt.

As a verb frog is

to hunt or trap frogs or frog can be to ornament or fasten a coat, etc with frogs or frog can be to unravel (a knitted garment).

As nouns the difference between whirl and wizzes

is that whirl is an act of whirling while wizzes is plural of wiz.

As a verb whirl

is to rotate, revolve, spin or turn rapidly.

As adjectives the difference between horrified and desperate

is that horrified is struck with horror while desperate is being filled with, or in a state of despair; hopeless.

As a verb horrified

is (horrify).

As nouns the difference between negligence and nonchalance

is that negligence is negligence; carelessness while nonchalance is .

As adjectives the difference between futile and happy

is that futile is incapable of producing results; useless; not successful; not worth attempting while happy is experiencing the effect of favourable fortune; having the feeling arising from the consciousness of well-being or of enjoyment; enjoying good of any kind, as peace, tranquillity, comfort; contented; joyous.

In obsolete terms the difference between advance and deserve

is that advance is to extol; to laud while deserve is to serve; to treat; to benefit.

As verbs the difference between advance and deserve

is that advance is to bring forward; to move towards the front; to make to go on while deserve is to be entitled to, as a result of past actions; to be worthy to have.

As a noun advance

is a forward move; improvement or progression.

As an adjective advance

is completed before need or a milestone event.

As nouns the difference between heathen and heresy

is that heathen is an adherent of the germanic neo-pagan faith of heathenry while heresy is (religion) a doctrine held by a member of a religion at variance with established religious beliefs, especially dissension from roman catholic dogma.

As an adjective heathen

is pertaining or adhering to the germanic neo-pagan faith heathenry.

As adjectives the difference between formal and latter

is that formal is being in accord with established forms while latter is relating to or being the second of two items.

As a noun formal

is formalin.

As nouns the difference between diuretics and antidiuretic

is that diuretics is while antidiuretic is (physiology|medicine) an agent that prevents or counteracts diuresis.

As an adjective antidiuretic is

preventing or counteracting diuresis, especially by the reduction of urination.