When I was in college, my advisor and I published a paper in a journal called “Applicable Analysis.” At the time, I thought that was a good name for a journal. It suggested research that was toward the applied end of the spectrum but not tied to a specific application.
Now when I hear “applicable analysis” I wonder what inapplicable analysis or inapplicable math in general would be. I’d hesitate to call any area of math inapplicable. Certainly some areas of math are applied more frequently and more directly than others, but I’ve been repeatedly surprised by useful applications of areas of math not traditionally classified as “applied.”