Catholic view of Biblical saints

[Saints](http://www.biblegateway.com/keyword/?search=saints&version1=CSB&searchtype=all&limit=none&wholewordsonly=no&resultspp=500&displayas=long&sort=bookorder) are present throughout the Bible. In my understanding, Protestant use of this word applies to *all believers*, which I understand is the New Testament (and OT?) meaning of the word. In my limited understanding of Catholicism, it seems that the Roman Catholic church selects a subset of *all believers* and declares *them* to be saints. Is this then to the exclusion of other believers, i.e. saying that *not all* believers are saints?