Tapet or Tappet: How To spell?
The word Tapet is misspelled against Tappet, a noun meaning "A lever or projection moved by some other piece, as a cam, or intended to tap or touch something else, with a view to produce change or regulate motion."
Tappet has double "pp" is mispronounced as "p"Remember double 'PP' in between the strings ta & et which should not be misspelled with single 'P'
Wrong Spelling:  ta-p-et  Correct Spelling:  ta-pp-et 
Explore spell check of Tappet to spell without errors.