Q: Sentence (1) We will strike a medal in your honour.
Sentence (2) Strike coins.. Word: strike.
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A: the same meaning

Q: Sentence (1) For the sake of argument.
Sentence (2) Died for the sake of his country.. Word: sake.
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A: different meanings

Q: Sentence (1) He's packin' a piece!
Sentence (2) He needed a piece of granite.. Word: piece.
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A:
different meanings