Aventol or Aventail: How To spell?

The word Aventol is misspelled against Aventail, a noun meaning "The movable front to a helmet; the ventail."

Word contains consecutive vowels 'AI' in between alphabets avent & l is misspelled as 'O'
Wrong Spelling:  avent-o-l 
Correct Spelling:  avent-ai-l 
Find more incorrect spellings of Aventail to spell right way.

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