Bun or Bain: How To spell?

The word Bun is misspelled against Bain, a noun meaning "A bath; a bagnio."

Word contains consecutive vowels 'AI' in between alphabets b & n is misspelled as 'U'
Wrong Spelling:  b-u-n 
Correct Spelling:  b-ai-n 
Check more misspelled words of Bain to spell it correct.

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