Cern or Cairn: How To spell?

The word Cern is misspelled against Cairn, a noun meaning "A pile of stones heaped up as a landmark, or to arrest attention, as in surveying, or in leaving traces of an exploring party, etc."

Word contains consecutive vowels 'AI' in between alphabets c & rn is misspelled as 'E'
Wrong Spelling: c-e-rn
Correct Spelling: c-ai-rn
Explore spell check of Cairn to spell without errors.