Question: Here is one sentence: When the weather is warm, the snowman will disappear; he will melt.
Here is another sentence: The wax melted in the sun.
Does the melt mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: You don't have the stuff to be a United States Marine.
Here is another sentence: The trunk was full of stuff.
Does the stuff mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: Hold one's nose.
Here is another sentence: Hold the bridge against the enemy's attacks.
Does the hold mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: The Academy of Music.
Here is another sentence: The American Academy of Arts and Sciences.
Does the academy mean the same thing in the two sentences?

Answer:
different meanings