Question: Here is one sentence: A ball of fire.
Here is another sentence: A ball of wool.
Does the ball mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The world's foremost authority on orangutans.
Here is another sentence: I have the authority to penalise the staff in my department, but not the authority to sack them.
Does the authority mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: He was suffering from museum fatigue.
Here is another sentence: The American public is experiencing scandal fatigue.
Does the fatigue mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The breaks of my new car act quickly.
Here is another sentence: The dog acts ferocious, but he is really afraid of people.
Does the act mean the same thing in the two sentences?

Answer:
different meanings