Q: Sentence (1) He was cut down on a close play at third.
Sentence (2) A simple harmony written in major thirds.. Word: third.
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A: different meanings

Q: Sentence (1) There was a round of applause.
Sentence (2) They brought us a round of drinks about every thirty minutes.. Word: round.
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A: different meanings

Q: Sentence (1) Will $100 do?
Sentence (2) A 'B' grade doesn't suffice to get me into medical school.. Word: do.
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A:
the same meaning