Problem: Sentence1: Let's follow our great helmsman!
Sentence2: He followed his lecture with a question and answer period.
Q: Does the term follow mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Can you unravel the mystery?
Sentence2: Stop playing with the seam of the tablecloth! You will unravel it.
Q: Does the term unravel mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: The heart and soul of the Republican Party.
Sentence2: They ran forward into the heart of the struggle.
Q: Does the term heart mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Break cigarette smoking.
Sentence2: On the hottest day of the year the refrigerator broke.
Q: Does the term break mean the same thing in both these sentences?

Answer:
different meanings