Question: Sentence 1: Prepare a speech.
Sentence 2: The prince was prepared to become King one day.
Does prepare mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: I believe it's your deal.
Sentence 2: I didn't have a good deal all evening.
Does deal mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: He is an authority on corporate law.
Sentence 2: I have the authority to penalise the staff in my department, but not the authority to sack them.
Does authority mean the same thing in these two sentences?
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Answer:
different meanings