The outside of the house needs painting.

The area that is not inside a building.
The kids are playing outside.
I like to read outside in the sun.
She parked her car outside the store.
outside area
outside space
outside world
exterior
outdoors
open air
The dog is playing outside.

In a position that is not inside something.
She waited outside the store.
The kids are running outside.
He parked his car outside.
outside the house
outside the building
outside the city
outdoors
out
beyond
Let's play outside.

In the open air or not inside a building.
The kids are playing outside.
We had a picnic outside.
She likes to read outside.
play outside
eat outside
sleep outside
outdoors
in the open
in the fresh air