Meaning of the word "a different ball game" in English

What does "a different ball game" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

a different ball game

US /ə ˈdɪf.rənt bɔːl ɡeɪm/
UK /ə ˈdɪf.rənt bɔːl ɡeɪm/
"a different ball game" picture

Idiom

1.

a completely different situation or set of circumstances

Example:
Learning to drive a car is one thing, but driving a truck is a different ball game.
We've handled small projects before, but this new client's demands are a different ball game.
Learn This Word at Lingoland