I may be wrong, but this is how I understand these terms, so Protestants correct me.
*]Can belong to any Protestant denomination
*]Typically very Christ and Bible-oriented
*]Quite conservative, socially and theologically
*]Emphasise the born-again experience
*]Often, but not always, have a simple or no liturgy (simple and more informal services), often in unadorned churches
*]Hold a range of views on Catholicism, from “just another denomination” to staunch anti-Catholicism.
*]Typically belong to Baptist, Pentecostal or Non-Denom denominations, though not all Baptists, Pentecostals or Non-Denoms are fundamentalists.
*]Similar in some regards to Evangelicals, but interpret Bible far more rigidly. Often very legalistic and intolerant of disagreement.
*]Creationism and end of world theologies figure much more prominently than among Evangelicals.
*]Little or no liturgy
*]Often virulently anti-Catholic; sometimes perceive the Catholic Church as the Whore of Babylon, the Pope as the Antichrist, and consider many Protestant denominations such as Lutheranism to be apostate
*]Belong to more traditional denominations such as Anglicanism, Lutheranism, Presbyterianism.
*]Often have either modernist or traditional Protestant theology - those with liberal theology are not unlike “cafeteria” or “liberal” Catholics, and those with traditional Protestant theology are quite similar to orthodox Catholics.
*]Typically socially liberal, except for traditional Protestants
*]Typically have little in the way of dogmatic beliefs, except for traditional Protestants
*]Often have services resembling the Catholic Mass (more “liturgical”)
*]Range from “all roads lead to heaven” view of Catholicism to anti-Catholic, either because of disagreement with Catholic morality or for traditional Protestant reasons.
Fundamentalists and Evangelicals are sometimes lumped together because the line is blurry, but more so because some people like to lump Evangelicals together with snakehandler sects, which themselves are far more extreme than normal Fundamentalists.
And an Evangelical Catholic would most likely be as ALLFORHIM described.
Since Evangelical Protestants are typically quite conservative, perhaps there are people who could also use it to denote an orthodox Catholic, who, like the Evangelical Protestant, emphasises a conversion experience, Scripture and a more personal relationship with Jesus Christ, though I haven’t really heard the phrase used before, so I can’t say for sure.