Cola or Colla: How To spell?

The word Cola is misspelled against Colla, which is plural of "Collum"

Colla has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings co & a which should not be misspelled with single 'L'
Wrong Spelling:  co-l-a 
Correct Spelling:  co-ll-a 
Find more incorrect spellings of Colla to spell right way.