Question: Here is one sentence: He was a bull of a man.
Here is another sentence: What he said was mostly bull.
Does the bull mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: Apologizing for losing your temper, even though you were badly provoked, showed real class.
Here is another sentence: The class of '97.
Does the class mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: When will the meeting be?
Here is another sentence: It is almost eight.
Does the be mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The wee small voice of conscience.
Here is another sentence: The incessant voices of the artillery.
Does the voice mean the same thing in the two sentences?

Answer:
different meanings