As nouns the difference between cleverness and perception

is that cleverness is the property of being clever while perception is organization, identification, and interpretation of sensory information.

As a noun to

is thaw, weather conditions that make snow and ice melt.

As a verb acclimatised is

(acclimatise).

As adjectives the difference between aghast and frightened

is that aghast is terrified; struck with amazement; showing signs of terror or horror while frightened is afraid; suffering from fear.

As a verb frightened is

past tense of frighten.

As nouns the difference between saying and observation

is that saying is a proverb or maxim; something often said while observation is the act of observing, and the fact of being observed.

As a verb saying

is .

As nouns the difference between courage and grovelling

is that courage is courage while grovelling is the act of one who grovels.

As a verb grovelling is

(british).

As nouns the difference between compliment and admiration

is that compliment is an expression of praise, congratulation, encouragement, or respect while admiration is wonder mingled with approbation or delight; an emotion excited by a person or thing possessed of wonderful or high excellence; as, admiration of a beautiful woman, of a landscape, of virtue.

As a verb compliment

is to pay a compliment (to); to express a favorable opinion (of).

As nouns the difference between idiocy and ridiculousness

is that idiocy is (psychology) the state or condition of being an idiot; the quality of having an intelligence level far below average; mental retardation while ridiculousness is (uncountable) the characteristic of being ridiculous.

As nouns the difference between accessory and helper

is that accessory is something that belongs to part of another main thing; something additional and subordinate, an attachment while helper is one who helps; an aide.

As an adjective accessory

is having a secondary, supplementary or subordinate function by accompanying as a subordinate; aiding in a secondary way; being additional; being connected as an incident or subordinate to a principal; contributing or being contributory said of persons and things, and, when of persons, usually in a bad sense; as, he was accessory'' to the riot; ''accessory sounds in music.

As nouns the difference between operation and possible

is that operation is the method by which a device performs its function while possible is a possible one.

As an adjective possible is

able but not certain to happen; neither inevitable nor impossible.

As a noun trial is

an opportunity to test something out; a test.

As an adjective trial is

pertaining to a trial or test or trial can be characterized by having three (usually equivalent) components.

As a verb trial is

to carry out a series of tests on (a new product, procedure etc) before marketing or implementing it.