Decenia or Decennia: How To spell?

The word Decenia is misspelled against Decennia, which is plural of "Decennium"

Decennia has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings dece & ia which should not be misspelled with single 'N'
Wrong Spelling:  dece-n-ia 
Correct Spelling:  dece-nn-ia 
Find more wrongly spelled words of Decennia to spell it well.

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