Question: Sentence 1: Can I keep my old stuffed animals?
Sentence 2: Keep smiling.
Does keep mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: The practice of the law.
Sentence 2: I took over his practice when he retired.
Does practice mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: He knocked lightly on the closed door of the study.
Sentence 2: He is a quick study.
Does study mean the same thing in these two sentences?
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Answer:
different meanings