Excelence or Excellence: How To spell?
The word Excelence is misspelled against Excellence, a noun meaning "A title of honor or respect; -- more common in the form excellency."
Excellence has double "ll" is mispronounced as "l"Remember double 'LL' in between the strings exce & ence which should not be misspelled with single 'L'
Wrong Spelling:  exce-l-ence  Correct Spelling:  exce-ll-ence 
Explore spell check of Excellence to spell without errors.