Problem: Word: hum

Sentence 1: There is a constant hum of military preparation.

Sentence 2: The hum of distant traffic.

Same meaning?
A: different meanings

Problem: Word: wreck

Sentence 1: Thanks to that quack I am a human wreck.

Sentence 2: The house was a wreck when they bought it.

Same meaning?
A: the same meaning

Problem: Word: gather

Sentence 1: Gather the close family members.

Sentence 2: Gather some stones.

Same meaning?
A: different meanings

Problem: Word: surface

Sentence 1: The facts had been brought to the surface.

Sentence 2: Three quarters of the Earth's surface is covered by water.

Same meaning?
A:
different meanings