Question: Sentence 1: I paid with a twenty and pocketed the change.
Sentence 2: The product is undergoing a change in order to improve it.
Does change mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: We must strike the enemy's oil fields.
Sentence 2: Panic struck me.
Does strike mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: I mean no harm.
Sentence 2: I only meant to help you.
Does mean mean the same thing in these two sentences?
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Answer:
the same meaning