Question: Here is one sentence: He's not in my line of business.
Here is another sentence: Historians can only point out those lines for which evidence is available.
Does the line mean the same thing in the two sentences?

Answer: different meanings

Question: Here is one sentence: The Union action of emancipating Southern slaves.
Here is another sentence: The United Nations must have the power to propose and organize action without being hobbled by irrelevant issues.
Does the action mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: The death of my grandmother saddened the whole family.
Here is another sentence: Her death came as a terrible shock.
Does the death mean the same thing in the two sentences?

Answer: the same meaning

Question: Here is one sentence: Those clouds show little sign of raining soon.
Here is another sentence: He showed signs of strain.
Does the sign mean the same thing in the two sentences?

Answer:
the same meaning