Question: Sentence 1: I can not work a miracle.
Sentence 2: The stitches of the hem worked loose after she wore the skirt many times.
Does work mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: Stay alone.
Sentence 2: Stay put in the corner here!
Does stay mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: The word is a basic linguistic unit.
Sentence 2: He was a member of a special police unit.
Does unit mean the same thing in these two sentences?
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Answer:
the same meaning