Stationery is paper, pens, pencils, and other things you use for writing and drawing.
Stationery is often thought of as something for school or work.
Examples:
I need to buy some stationery for school.
She has a lot of stationery in her desk.
The stationery is on the table.
I like to draw with my stationery.
I have so much stationery, I could open a store!
I always keep my stationery in a special box.