To babble means to speak incoherently; to scribble means to write incoherently.
The filament is the part of light bulb hat is used for producing light; the wick is the part of the candle that is used for producing light.
Shin is the part of the body below the knee; forearm is the part of the body below the elbow.
An antidote is used to reduce the effect of posion; a lubricant is used to reduce the effect of friction.
An embezzler steals funds against law; a poacher hunts game against law. (Here 'game means wild animals.)
'Savory' is an adjective meaning 'pleasant to taste', melodious is an adjective meaning 'pleasant to hear'.
One commiserates with a person out of sympathy; one reveres a person out of admiration.
Cacophonous noise results in a din; monotonous sound results in a drone.
Materialism means giving undue importance to objects; hedonism means giving undue importance to pleasure.
A stubborn (meaning unbending) person shows no vacillation (meaning hesitation); a poised (meaning calm; unperturbable) person shows no embarrassment.
A molecule contains more than one atom; a compound contains more than one element.
Knitting one's eyebrows expresses annoyance; pursing of one's eyebrows expresses annoyance
A judge's role is to render justice; an actor's role is to provide entertainment.
A marathon (meaning a long distance running race) tests one's endurance; a sprint (meaning a short distance running race) test's one's speed.
We offer congratulations to a person on his success; we offer congratulations to a person at his sorrow.