They sound identical, and they look almost identical. One is about standing still, and the other is about pens and paper.
- Stationary (with an A) means not moving.
- Stationery (with an E) means writing supplies: paper, pens, envelopes.
Stationary: not moving
Stationary is an adjective. It describes something that stays in one place or isn't moving.
The bus was stationary in the traffic for ten minutes.
A stationary bike stays in one place while you pedal.
The cat was stationary on the sofa all afternoon.
Keep the ladder stationary while I climb.
Stationery: paper and pens
Stationery is a noun. It means the things you use to write, such as paper, pens, pencils and envelopes. It can also be the shop that sells them.
I bought some new stationery for school.
My favourite part of September is the stationery shop.
The stationery drawer is full of pens that do not work.
She sent the letter on pretty blue stationery.
Easy way to tell them apart
Ask: is it about moving or writing?
- Moving, or not moving? Stationary, with an A.
- Paper, pens, envelopes? Stationery, with an E.
💡 The OddLingo Trick
Stationery has an E, like envelope and pens.
Stationary has an A, like car: a car that is standing still.
⚠️ Common mistakes
Writing supplies? Use stationery.
❌ I need some new stationary for school.
✅ I need some new stationery for school.
Not moving? Use stationary.
❌ The train was stationery at the station.
✅ The train was stationary at the station.
Good to know
Here is the odd part. The word stationer (a seller of paper and books) started as someone who sold from a fixed place, a shop that stayed where it was, instead of a traveller who moved around.
So both words probably began with the same idea of staying in one place. Over time, one drifted to mean "not moving" and the other to mean "paper and pens".
💬 In a conversation
Sam: Why are you standing so still?
Mia: I'm being stationary.
Sam: Why?
Mia: I'm guarding my new stationery.
Sam: From who?
Mia: My brother. He never returns pens.