Greining or Graining: How To spell?

The word Greining is misspelled against Graining, a noun meaning "A process in dressing leather, by which the skin is softened and the grain raised."

Word contains consecutive vowels 'AI' in between alphabets gr & ning is misspelled as 'EI'
Wrong Spelling:  gr-ei-ning 
Correct Spelling:  gr-ai-ning 
Find more wrongly spelled words of Graining to spell it well.

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