In printmaking, the origination point from which a print is derived is known as the –. the single print taken from one of these using a printing press is referred to as the –; whereas all the identical copies created during a single printing form the –. when printing in color, the process of aligning the different plates so that all the colors print perfectly is called the –.

i believe the answer is  the similarity is that both are sacrifices which have the same purpose and sacrifice - jesus christ, but the difference is in offering of that sacrifice.

the similarity is that both are sacrifices which have the same purpose (repenting our sins) and sacrifice - jesus christ.  the difference is in the way of the offering that sacrifice. the sacrifice of jesus on the calvary is sacrifice of his actual living body and blood, but the sacrifice of the mass is the sacrifice of the jesus through bread (body) and blood (wine). in the sacrifice on calvary jesus was offered for us; while at mass he offers himself through us.