Would you explain difference between RWD (Responsive Web Design) and AWD (Adaptive Web Design) in a simple way?
Adaptive (AWD): Not necessarily set on a fluid grid; targets specific device resolutions (320, 768, 1024, et.al.); can have set widths (fixed) or relative widths (%), controlled by media queries.
Responsive (RWD): Built on a fluid grid; will change with the browser, no matter what the screen resolution; content can break apart and realign if need be.
In short: RWD is like AWD, except taken a step or two further, in order to future proof design for unknown devices as well as known devices.