Problem: Sentence1: The problem with achievement tests is the narrowness they impose on students.
Sentence2: Frustrated by the narrowness of people's horizons.
Q: Does the term narrowness mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: I think that he is her boyfriend.
Sentence2: I think he is very smart.
Q: Does the term think mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: He read the warning in the doctor's surgery.
Sentence2: I dropped in on the surgery as I was passing to show the doctor my hemorrhoids.
Q: Does the term surgery mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: The head of the list.
Sentence2: The head of the stairs.
Q: Does the term head mean the same thing in both these sentences?

Answer:
the same meaning