Question: Sentence 1: Tears well in her eyes.
Sentence 2: The currents well up.
Does well mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: He enjoyed the society of his friends.
Sentence 2: This society has been known for centuries for its colorful clothing and tight-knit family structure.
Does society mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: It may rain in which case the picnic will be canceled.
Sentence 2: A window case.
Does case mean the same thing in these two sentences?
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Answer:
different meanings