Question: Here is one sentence: Did you catch the thief?
Here is another sentence: He caught her staring out the window.
Does the catch mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: A head of cauliflower.
Here is another sentence: He is two heads taller than his little sister.
Does the head mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: He reserved a large block of seats.
Here is another sentence: He held a large block of the company's stock.
Does the block mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Karma's a bitch.
Here is another sentence: My bitch just had puppies: they're so cute!
Does the bitch mean the same thing in the two sentences?

Answer:
different meanings