Problem: Sentence1: He observed a regular lunchtime.
Sentence2: It's almost lunchtime, so I think I'll finish up later this afternoon.
Q: Does the term lunchtime mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: To face the front of a coat, or the bottom of a dress.
Sentence2: Face the lapels of the jacket.
Q: Does the term face mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Here I stand, wondering what to do next.
Sentence2: I am standing my ground and won't give in!
Q: Does the term stand mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Subjects received a small electric shock when they made the wrong response.
Sentence2: It came as a shock to learn that he was injured.
Q: Does the term shock mean the same thing in both these sentences?

Answer:
different meanings