Correct spelling, explanation: cemetery is actually quite an old word and it came a long way to become what we currently use in English. It stems from the Greek koimeterion. The important thing is that in these kinds of old words, the consonants work like a skeleton of the word. Consider that this change is quite logical. K became c and vowels were simplified to suit English, but if you compare cemetery to the Greek word, you can see that many sounds stayed the same.

Definition of cemetery:
noun
1. a place of burial of the dead
My local cemetery is very old and spooky. I’m scared to go near it at night.
If you visit Paris, it’s worth visiting Père-Lachaise cemetery to visit the graves of many famous people.

Incorrect spelling, explanation: the word cemetery comes from the Greek word koimeterion. The original word is quite different from the English one, but the important thing here is that the basic sounds have stayed the same through many changes. If you wonder if the spelling is cemetery or cementary, see that the original word ends in -erion which dictates the spelling with e. But realistically, think about the pronunciation and see that the one ending with -ary would be completely different.

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling

Incorrect spelling