Problem: Word: piece

Sentence 1: I need to rest for a piece.

Sentence 2: He needed a piece of granite.

Same meaning?
A: different meanings

Problem: Word: formation

Sentence 1: A formation of planes.

Sentence 2: The formation of sentences.

Same meaning?
A: different meanings

Problem: Word: mystery

Sentence 1: How it got out is a mystery.

Sentence 2: The truth behind the events remains a mystery.

Same meaning?
A: the same meaning

Problem: Word: pull

Sentence 1: Pull the oars.

Sentence 2: Pull the trigger of the gun.

Same meaning?
A:
different meanings