Answer: It takes the Earth 24 hours to make one full _rotation_ on its _axis_. It takes one year for the Earth to make one _revolve_ around the Sun.
Step-by-step explanation:
"Rotation" refers to an object's spinning motion about its own axis. "Revolution" refers the object's orbital motion around another object. For example, Earth rotates on its own axis, producing the 24-hour day. Earth revolves about the Sun, producing the 365-day year.