As a noun college

is academy.

As an adjective collegebound is

bound for college; soon to attend college.

As adjectives the difference between cover and coverless

is that cover is of or pertaining to the front cover of a book or magazine while coverless is without a cover or covers.

As a noun cover

is a lid.

As a verb cover

is to place something over or upon, as to conceal or protect.

As a noun cubicle

is a small separate part or one of the compartments of a room.

As an adjective cubicled is

fitted with, or divided into, cubicles.

In geology terms the difference between cirque and headwall

is that cirque is a curved depression in a mountainside with steep walls, forming the end of a valley while headwall is the steep cliff at the back of a cirque.

As nouns the difference between outlet and headwall

is that outlet is a vent or similar passage to allow the escape of something while headwall is (geography) the highest cliff of a glacial cirque.

As nouns the difference between drain and headwall

is that drain is a conduit allowing liquid to flow out of an otherwise contained volume while headwall is (geography) the highest cliff of a glacial cirque.

As a verb drain

is to lose liquid.

As nouns the difference between culvert and headwall

is that culvert is a transverse channel under a road or railway for the draining of water while headwall is the highest cliff of a glacial cirque.

As a verb culvert

is to channel (a stream of water) through a culvert.

As a noun cavity

is a hole or hollow depression.

As an adjective cavityless is

without a cavity or cavities.

As nouns the difference between event and fanfest

is that event is blowhole (of cetaceans) while fanfest is an event held for fans.

As nouns the difference between fan and fanfest

is that fan is a hand-held device consisting of concertinaed material, or slats of material, gathered together at one end, that may be opened out into the shape of a sector of a circle and waved back and forth in order to move air towards oneself and cool oneself while fanfest is an event held for fans.

As a verb fan

is to blow air on (something) by means of a fan (hand-held, mechanical or electrical) or otherwise.

As a proper noun Fan

is a diminutive of Frances.

As an abbreviation FAN

is file area network.