Question: Sentence 1: He appointed himself emperor for life.
Sentence 2: While there's life there's hope.
Does life mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: He stuck his head out the window.
Sentence 2: Be careful when you pet that dog on the head; it may bite.
Does head mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: There has been talk about you lately.
Sentence 2: I attended an interesting talk on local history.
Does talk mean the same thing in these two sentences?
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Answer:
different meanings