Question: Sentence 1: Did you get it?
Sentence 2: I just don't get him.
Does get mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: There was a grain of truth in what he said.
Sentence 2: We stored a thousand tons of grain for the winter.
Does grain mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: I gather from Aunty May that you had a good day at the match.
Sentence 2: I gather you have not done your homework.
Does gather mean the same thing in these two sentences?
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Answer:
the same meaning