That information is completely unnecessary.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?

Despite already being busy, he ended up taking on an additional project.

This project has too much extra load, which is slowing our progress.

He bought a new coat.

When the concert started, a crowd of people formed.

I always make a memorandum so that I don't forget important things.

He was drawing a graffiti.

A large snake was crawling through the forest.