It's odd that with all the 'high-brow' datatype names such as dictionaries, tuples, and sets, they decided to call this one Counter instead of the obvious choic

It's odd that with all the 'high-brow' datatype names such as dictionaries, tuples, and sets, they decided to call this one Counter instead of the obvious choice 'multiset' (or 'bag'); it supports set operations such as intersection, so it's more generally useful than just collecting top ten lists &c.