Problem: Sentence1: General Smith was placed in command.
Sentence2: A good command of French.
Q: Does the term command mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Your wish will come true.
Sentence2: The water came to a boil.
Q: Does the term come mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Get a life.
Sentence2: His heroism saved a life.
Q: Does the term life mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Do nothing.
Sentence2: A 'B' grade doesn't suffice to get me into medical school.
Q: Does the term do mean the same thing in both these sentences?

Answer:
different meanings