Problem: Sentence1: The movement of cargo onto the vessel.
Sentence2: He had a bowel movement.
Q: Does the term movement mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Their angry expressions were a clear sign they didn't want to talk.
Sentence2: Those clouds show little sign of raining soon.
Q: Does the term sign mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Run a new program on the Mac.
Sentence2: My computer is too old to run the new OS.
Q: Does the term run mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Inwardness is what an Englishman quite simply has, painlessly, as a birthright.
Sentence2: Socrates' inwardness, integrity, and inquisitiveness" -- H.R.Finch.
Q: Does the term inwardness mean the same thing in both these sentences?

Answer:
different meanings