Coper or Copper: How To spell?
The word Coper is misspelled against Copper, a noun meaning "A coin made of copper; a penny, cent, or other minor coin of copper."
Copper has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings co & er which should not be misspelled with single 'P'
Wrong Spelling:  co-p-er  Correct Spelling:  co-pp-er 
Find more incorrect spellings of Copper to spell right way.