Q: Sentence (1) To start a business.
Sentence (2) Start a new job.. Word: start.
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A: different meanings

Q: Sentence (1) Convert slaves to laborers.
Sentence (2) Convert lead into gold.. Word: convert.
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A: the same meaning

Q: Sentence (1) Can you break a hundred-dollar bill for me?
Sentence (2) The wholesaler broke the container loads into palettes and boxes for local retailers.. Word: break.
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A:
the same meaning