Problem: Sentence1: It contains approximately a third of the minimum daily requirement.
Sentence2: He ate a third of the pie.
Q: Does the term third mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Roll your hair around your finger.
Sentence2: Bill rolled the ball down the hill.
Q: Does the term roll mean the same thing in both these sentences?

Answer: different meanings

Problem: Sentence1: Drill for oil.
Sentence2: Don't drill here, there's a gas pipe.
Q: Does the term drill mean the same thing in both these sentences?

Answer: the same meaning

Problem: Sentence1: Keep my job for me while I give birth.
Sentence2: The students keep me on my toes.
Q: Does the term keep mean the same thing in both these sentences?

Answer:
different meanings