Absolutely necessary.

Involving little trouble or effort.

Providing a faithful representation of something

Grasping mentally; understanding

Originating or occurring naturally in a particular place; native.

A place where or receptacle in which things are or may be stored.

Started to introduce something new

The area covered by or included in somethin

Relating to language

A development or improvement

Made an action or process easy or easier.

Direct one's hopes or ambitions towards achieving something.

Provide or give a service, help, etc

Failed to notice.