I study both traditional and simplified. When I look at the popup for something like 肌 that is the same in both traditional and simplified, the component breakdown is showing the meanings of the *simplified* components. In the case of 肌 it says that its components are
月 yuè: moon; month, flesh
几 jǐ, jī: small table; how many; several; a few, almost
but this isn't correct for traditional, where 几 only means "small table". Even more confusing, when I click on 几 it shows the popup for the traditional variant.
James