Each field seems to have its own nomenclature. I recognize 'instrumental variables' from a (bio-)statistics course, so I think that's a pure statistics term. Larry Wasserman has a vocabulary chart in 'All of Statistics' (there's a PDF I won't link to) that lists terms differing between statistics and computer science. For example he writes that 'using data to estimate an unknown quantity' is called 'estimation' in statistics and 'learning' in computer science.