He is decocking the gun before storing it.

He decocked the gun before putting it away.

He decocks the gun before putting it away.

He carefully decocked the gun before putting it away.

I saw a flock of decoy-ducks on the lake.

The hunter set up a decoy duck to attract the wild ducks.

Decorator patterns are used to add functionality to an object dynamically.

The decorator pattern is a design pattern that allows behavior to be added to an individual object, dynamically, without affecting the behavior of other objects from the same class.

Abdominal decompression is a medical procedure used during childbirth.

He set up a duck decoy to attract the wildfowl.