Framerates and refresh rates are quite different when you're talking of a CRT monitor. CRT monitors don't show a single frame at a time, but rather they use an electron gun to draw dot by dot, line by line from left to right, top to bottom, and when the gun reaches the bottom, it traverses back to the top left corner and continues to draw the next "frame". As such, it is somewhat continuous. Also, as mentioned above, the phosphors of a CRT monitor don't hold the color/brightness indefinitely, but fades away with time, pretty quickly actually, which is why a high refresh rate is desired. Once the electron gun hits a spot in the CRT phosphor, that part will brighten up, but as the electron gun moves away to draw the next part, that part will start to fade away and decade. It happens so fast that at a lower enough refresh rate(60Hz) you will notice "flickering", as if the monitor is turning itself on and off discretely very quickly, when it fact its more like a pulsing effect.
Framerates in the strict sense however is pertaining to discrete frames. For example, if I show you a picture book with continuous pictures on each page, each one captured at a slight time difference from the previous one, and then if I flipped the book real fast, at some point you'd be interpreting the flipped image as continuous. If I flip it slow enough, you're gonna see a slideshow. This differs from the refresh rate example used above in that at any point in time you're viewing a complete frame, and every part of that frame holds its brightness/intensity for the full duration of the frame. In the refresh rate example though, the frame is only complete for a very small percentage of the time(depending on resolution/refresh rate), when the very last pixel is drawn. Also, by that time the brightness of the earlier drawn pixels would have decayed considerably, rendering them more or less 'black", unless you have a high enough refresh rate.
Gee, that was a chunk, hope it made some sense...