If your grandmother gives you a set of stationery as a birthday present, it might be a subtle hint to write her a thank you note. Stationery is a set of writing paper that comes with envelopes.
Stationery is one of those tricky words that almost seems to want you to spell it wrong. It's only one letter away from another word that sounds exactly the same but has a completely different meaning, stationary, which means "remaining in one place." One way to remember the spelling of stationery is that "paper" has an "er" in it, and so does stationery.
