Question: Here is one sentence: He borrowed a large sum.
Here is another sentence: A tidy sum.
Does the sum mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Did you see today's newspaper?
Here is another sentence: Today is beautiful.
Does the today mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Open the door a crack.
Here is another sentence: There was a crack in the mirror.
Does the crack mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: After the fire a still small voice. -- 1 Kings 19:12.
Here is another sentence: Conservatism has many voices.
Does the voice mean the same thing in the two sentences?

Answer:
different meanings