Fins or Finns: How To spell?
The word Fins is misspelled against Finns, a noun meaning "A branch of the Mongolian race, inhabiting Northern and Eastern Europe, including the Magyars, Bulgarians, Permians, Lapps, and Finlanders."
Finns has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings fi & s which should not be misspelled with single 'N'
Wrong Spelling:  fi-n-s  Correct Spelling:  fi-nn-s 
Find more wrongly spelled words of Finns to spell it well.