Fail: 'Some Helpful Terms'

This list of helpful terms comes from the Papal Visit Office of  the Catholic Bishops Conference:

   It appears to be aimed at non-Catholics in government, police, technical support who are involved in events   during the historic papal  visit.  

It looks as if someone up at head office needs some basic instruction, can anyone recommend a good  Preparation for First Holy Communion course?               

UPDATE: The great Vincenzo has supplied a number of terms which were somehow missed from the
original !