Problem: Sentence1: I wish I had seen the look on his face when he got the news.
Sentence2: The face of the city is changing.
Q: Does the term face mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Could you convert my dollars into pounds?
Sentence2: Smith converted and his team won.
Q: Does the term convert mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Stop a car.
Sentence2: Your rights stop where you infringe upon the rights of other.
Q: Does the term stop mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: It just won't make much difference to me.
Sentence2: His support made a real difference.
Q: Does the term difference mean the same thing in both these sentences?

Answer:
the same meaning