Question: Sentence 1: After the scare about foot-and-mouth disease a lot of people started eating fish instead of meat.
Sentence 2: They have a chef who specializes in fish.
Does fish mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: Lift a ban.
Sentence 2: I lifted the books onto the table.
Does lift mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: Pressurize a space suit.
Sentence 2: The airplane cabin is pressurized.
Does pressurize mean the same thing in these two sentences?
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Answer:
the same meaning