"Mixed Bill Counter" = a single-pocket machine that counts and displays the number of bills provided, plus evaluates the value of each bill. That is, if 100 quantity of $5.00 bills are added, the quantity count will return "100" and the value count will be "$500". If a mix of bills is included, such as 100 x $1 plus 10 x $5 plus 5 x $20, the quantity count will return "115" and the value count will be "$250".
"Money Sorter (Bill Sorter)" = also known as a discriminator; a bill sorter is a dual-pocket (or greater) machine that operates similar to the mixed bill counter, but includes multiple trays for automatically separating the bills into stacks of their own denomination. A two-pocket sorter can separate one specific denomination from a mixed stack of bills; or can be set to discard any rejected or suspect bills for later review.