EXAMPLE FOR YAA:
Did you know that crocodiles tend to have longer, pointed, V-shaped snouts while alligators generally have wider, rounder, U-shaped snouts?
WHILE signals a difference between alligators and crocodiles.
Answer:
It was the revolution which occurred in October 1917. It was led by Petrograd Soviet and the Bolshevik Party under the leadership of Lenin. A military Revolutionary Committee was appointed by the Soviet under Leon Trotskii to organise the seizure
Your question is very vague and therefore hard to understand but I would assume you are asking for the explanation of the pun.
This phrase is a pun because skiers ski down slopes, and going down hill is another way of saying not going very well. Old skiers never die, they just go down hill is a pun because skiers go down hills.
