Question: Sentence 1: You can stay with me while you are in town.
Sentence 2: I can only stay for an hour.
Does stay mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: While there's life there's hope.
Sentence 2: Having experienced both, the vampire decided that he preferred (un)death to life.
Does life mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: Start from the bottom and work towards the top.
Sentence 2: This dough does not work easily.
Does work mean the same thing in these two sentences?
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Answer:
different meanings