Question: Sentence 1: You can not even begin to understand the problem we had to deal with during the war.
Sentence 2: He began early in the day.
Does begin mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: Cats stretch with equal ease and agility beyond the point that breaks a man on the rack.
Sentence 2: I always stretch my muscles before exercising.
Does stretch mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: Soon the rain will stop.
Sentence 2: The riots stopped when police moved in.
Does stop mean the same thing in these two sentences?
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Answer:
the same meaning