Meaning: Not moving or changing position:
* The car was stationary at the traffic light.
* The bike remained stationary while he adjusted his helmet.
* Despite the storm, the ship remained stationary in the harbor.
Meaning: Relating to writing materials:
* The office supply store had a wide selection of stationary for sale.
* She used elegant stationary to write her thank you notes.
* The company logo was printed on all their stationary.
Note: The spelling "stationary" (one "a") refers to the meaning of "not moving". The spelling "stationery" (two "e"s) refers to writing materials.