Answer:
they are different because the government positions change after every new president comes in because of the parties so some of the government positions term limits go by as fast as the term limits of a president
and the supreme court justices serve there term limits for 18 years because they are appointed under the presidents that are in the white house for 18 years and then they reelect for a new supreme court justice because if they served for an longer there would be tension in the white house.
Step-by-step explanation:
i hope i helped if i didn't pls let me know i do my best when it comes to helping others.