Direction.
Of the given four pairs three pairs express the relationship similar to that expressed in the capitalised pair. Select that pair which is not related in this way.
Propeller : Dog
Radar : Satellite
Hydrogen : Balloon
Accelerator : Car
A. Propeller : Dog
Akbar : British
Present : Future
Shakespeare : Tennyson
Colossus : Elephant
Transient : Permanent
Wild : Prey
Flora : Fauna
Sailor : Pirate
Carpenter : Saw
Runner : Sneakers
Numismatist : Coins
Astrologer : Predictions
Tireless : Tired
Tired : Habitual
Tireless : Habitual
Impoverished : Habitual
Dazed : Cloudy
Obscure : Vague
Bright : Gloomy
Nebulous : Dim
Hill : Stream
Forest: Valley
Tree: Field
Oasis: Desert
Torch : Light
Motor : Car
Coal : Coke
Petrol : Gasoline
Potentate : Kingdom
Bureaucrat : Government
Apostate : Religion
Tailor : Law
Snake : Cobra
Bird : Mammal
Wasp : Insect
Iion : Amphibian
Cooler : Wine
Archives : Document
Hive : Bee
Greenhouse : Plant
Geology : Earth
Stars : Astronomy
Teacher : Class
Disease : Etiology
Memory : Commemoration
Display : Exhibition
Admission : Initiation
Solemn : Vestment
Winter : Summer
Pat : Slap
Storm : Rain
Topple : Tumble
Venal
Maleficence
Dislike
GallHints
Vacation : Work
Retirement : Retreat
Sabbatical : Freedom
Intermission : Respite
Chortle : distress
Snarl : confusion
Fidget : uneasiness
Waddle : embarrassment
Vocal : Quiet
Mournful : Oblivious
Passionate : Appreciative
Content : Euphoric
Elbow : Wrist
Teeth : Mouth
Arm : Leg
Fist : Hand
Sexism : Chauvinism
Parochialism : Linguism
Nationalism : Identity
Communalism : Religion
Carpenter : Saw
Painter : Brush
Poet : Sonnet
Sculptor : Atelier
Earthquake : Tremors
Noise : Intensity
Light : Radiance
Length : Metres
Overt : Furtive
Covert : Stealthy
Open : Close
News : Rumour
Statement : Testimony
Seeing : Observing
Taking : Stealing
Eating : Dining
Prologue : novel
Movement : sympathy
Sketch : drawing
Index : book
Stanza : Chapter
Art : Fiction
Clause: Sentence
Novel: Variation
Absorbent : liquid
Desert : sand
Autoclave : germ-free
Hermetic : air
Akbar : British
Present : Future
Shakespeare : Tennyson
Colossus : Elephant
Snake : scale
Bark : tree
Human : epidermis
Hump : camel
Evaporation : heat
Consumption : cook
Oration : listen
Exhaustion : buy
Doctor : Patient
Curator : Museum
Bank : Account
Fruit : Seed