Question: Here is one sentence: The formation of crystals.
Here is another sentence: The formation of gas in the intestine.
Does the formation mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The baby was a boy.
Here is another sentence: Most soldiers are only boys in uniform.
Does the boy mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Roll a cigarette.
Here is another sentence: The drawer rolled open.
Does the roll mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: A shared line.
Here is another sentence: A dedicated line.
Does the line mean the same thing in the two sentences?

Answer:
the same meaning