As nouns the difference between panic and perturbation

is that panic is overpowering fright, often affecting groups of people or animals while perturbation is agitation; the state of being perturbed.

As an adjective panic

is pertaining to the god Pan.

As a verb panic

is to feel overwhelming fear.

Originating is a related term of initiation.

As a verb originating

is .

As a noun initiation is

the act of initiating, or the process of being initiated or introduced; as, initiation into a society, into business, literature, etc.

Superior is a related term of authoritative.

As adjectives the difference between superior and authoritative

is that superior is higher in quality while authoritative is arising or originating from a figure of authority.

As a noun superior

is a person of higher rank or quality.

Bravery is a related term of dauntlessness.

As nouns the difference between bravery and dauntlessness

is that bravery is (usually|uncountable) being brave, courageousness while dauntlessness is the characteristic of being dauntless; fearlessness.

Play is a related term of prank.

As verbs the difference between play and prank

is that play is (lb) to act in a manner such that one has fun; to engage in activities expressly for the purpose of recreation or entertainment while prank is to adorn in a showy manner; to dress or equip ostentatiously.

As nouns the difference between play and prank

is that play is activity for amusement only, especially among the young while prank is (obsolete) an evil deed; a malicious trick, an act of cruel deception.

As an adjective prank is

(obsolete) full of gambols or tricks.

As adjectives the difference between gladsome and wonderful

is that gladsome is happy, joyous, or light-hearted while wonderful is tending to excite wonder; surprising, extraordinary.

Penchant is a related term of fancy.

As nouns the difference between penchant and fancy

is that penchant is taste, liking, or inclination (for) while fancy is the imagination.

As an adjective fancy is

decorative.

As a verb fancy is

(formal) to appreciate without jealousy or greed.

As nouns the difference between cavity and void

is that cavity is a hole or hollow depression while void is an empty space; a vacuum.

As an adjective void is

containing nothing; empty; vacant; not occupied; not filled.

As a verb void is

to make invalid or worthless.

As nouns the difference between term and reservation

is that term is limitation, restriction or regulation while reservation is the act of reserving, withholding or keeping back.

As a verb term

is to phrase a certain way, especially with an unusual wording.

As adjectives the difference between specific and express

is that specific is explicit or definite while express is moving or operating quickly, as a train not making local stops.

As nouns the difference between specific and express

is that specific is a distinguishing attribute or quality while express is a mode of transportation, often a train, that travels quickly or directly.

As a verb express is

(to convey meaning) To convey or communicate; to make known or explicit.