Q: Sentence (1) The police are following a promising lead.
Sentence (2) We were just waiting for someone to take the lead.. Word: lead.
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A: different meanings

Q: Sentence (1) These colors clash.
Sentence (2) Fans from opposing teams clashed on the streets after the game.. Word: clash.
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A: the same meaning

Q: Sentence (1) We spread our sleeping bags on the dry floor of the tent.
Sentence (2) The fire spared the forest floor.. Word: floor.
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A:
different meanings