What is your definition of cleaning?

Today I was pondering the meaning of cleaning. It could mean any of the following:

1. picking-up and putting away stuff.

2. Dusting and vacuuming and washing the high-traffic areas.

3. Thoroughly washing/disinfecting  and dusting and sweeping the entire room/house including all the hidden places above window frames under furniture etc.

I'll accept any of the above if anyone else in the house is willing to do it!