The word Buzing is misspelled against Buzzing, which is present continuous of "Buzz"
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Buzzing has double "zz" is mispronounced as "z"
Remember double 'ZZ' in between the strings bu & ing which should not be misspelled with single 'Z'
Wrong Spelling:  bu-z-ing 
Correct Spelling:  bu-zz-ing 
Check more misspelled words of Buzzing to spell it correct.