hanger is the shed in which an airplane is kept; a stable is the shed in which a horse is kept.
A vane or weathercock is an instrument which shows the wind direction. A vane is used for snowing the wind direction; a sundial is used for knowing time.
An anonymous letter has no name; a shapeless object has no form.
Sympathy is an example of emotion; friendship is an example of relationship.
A habit is a customary behaviour; a reflex is an involuntary behaviour.
A threat is given because of hostility (meaning enmity); a compliment is given because of admiration.
An iron is attracted by a magnet; a plant is attracted by sunlight.
Being ardent (meaning passionate) is an intensified form of being interested; being incensed (meaning very angry) is an intensified form of being annoyed.
What is in vogue is generally accepted; what is in disrepute is generally shunned (meaning avoided).
Hyperbole means exaggeration in language; prodigality means excessive spending.
A studio is where an artist works; a laboratory is where a chemist works. (Studio not always means a place where photographs are taken; it is the general name for an artist's workplace.
A tidal wave is an intensified form of a ripple; a hurricane is an intensified form of a breeze.
Education dispels ignorance; medicine dispels disease.
The violinist uses a bow to produce sound from a violin; a drummer was a drumstick to produce sound from a drum. (a Drumstick are not attached as parts of a violin or a drum, but are external to them.
One is dumbfounded in astonishment; on is exasperated (meaning greatly imitated) in frustration (meaning grave disappointment).