Pinas or Pinnas: How To spell?

The word Pinas is misspelled against Pinnas, which is plural of "Pinna"

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