Question: Sentence 1: A body of precedents.
Sentence 2: A body of doctrine.
Does body mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: Float data.
Sentence 2: The dancer floated across the stage.
Does float mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: He went out to have a look.
Sentence 2: He gave it a good looking at.
Does look mean the same thing in these two sentences?
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Answer:
the same meaning