Q: Does the word "stay" mean the same thing in "I can only stay for an hour." and "The smell stayed in the room."?

A: different meanings

Q: Does the word "day" mean the same thing in "Every dog has his day." and "My day began early this morning."?

A: different meanings

Q: Does the word "charge" mean the same thing in "He was arrested on a charge of larceny." and "The child was a charge of the nanny."?

A: different meanings

Q: Does the word "pay" mean the same thing in "Don't pay him any mind." and "Pay attention."?

A:
the same meaning