We use "down" to say something moves from a high place to a low place. It shows a direction toward the ground or a lower point.
She climbed down from the tree.
Please put the box down here.
"Down" as an adjective means low in mood or feeling sad, or not working (like machines). It shows a lower state or condition.
He was feeling down yesterday.
The computer is down right now.
"Down" as a noun is the soft feathers on baby birds or under the feathers of adult birds. These feathers are very light and soft.
The baby chick has soft yellow down.
The pillow is filled with duck down.
"Down" describes direction along a river, moving towards its lower end or mouth. It means downstream or towards a lower place along a path.
They sailed down the river.
The village is down from the mountain.
As a verb, "down" means to write or record information on paper or a device. People use it to save details in a note form.
I will down your phone number now.
Please down the meeting date here.
"Down" can mean to drink something quickly or all at once. This usage is common for drinks like water or alcohol.
He downed the glass of water fast.
She downed the juice in one go.
