Guyac or Guaiac: How To spell?

The word Guyac is misspelled against Guaiac, a noun meaning "Guaiacum."

Word contains consecutive vowels 'AI' in between alphabets gu & ac is misspelled as 'Y'
Wrong Spelling:  gu-y-ac 
Correct Spelling:  gu-ai-ac 
Check more misspelled words of Guaiac to spell it correct.

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