Question: Here is one sentence: The best poker players can tell if the opponents have a good hand by looking at their expression.
Here is another sentence: Her expression changed from joy to misery after realising her winning lottery ticket had expired.
Does the expression mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: He has a smooth line but I didn't fall for it.
Here is another sentence: A dedicated line.
Does the line mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: This is a product of lime and nitric acid.
Here is another sentence: His reaction was the product of hunger and fatigue.
Does the product mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: Fall into a trap.
Here is another sentence: She fell ill.
Does the fall mean the same thing in the two sentences?

Answer:
the same meaning