Problem: Word: work

Sentence 1: This dough does not work easily.

Sentence 2: He could not work the math problem.

Same meaning?
A: different meanings

Problem: Word: time

Sentence 1: This time he succeeded.

Sentence 2: When was the last time we went out? I don't remember.

Same meaning?
A: the same meaning

Problem: Word: key

Sentence 1: The key to winning a game.

Sentence 2: They were carrying two keys of heroin.

Same meaning?
A: different meanings

Problem: Word: voice

Sentence 1: The noisy voice of the waterfall.

Sentence 2: The incessant voices of the artillery.

Same meaning?
A:
the same meaning