The word "apar" is a bit of an enigma when it comes to spelling. The correct spelling is actually "a pair". The IPA phonetic transcription for this word is /ə peə(r)/. The confusing part is that "a pair" sounds exactly like "apar" when spoken, leading some people to misspell it. To avoid this mistake, it's important to remember that "a pair" refers to two things that go together, like a pair of shoes. So make sure you don't leave out that extra "i" and spell it correctly as "a pair".