Fade is the hairstyle that is more laidback and timid. This is the hairstyle that can be taken to work and can be a serious look for guys. Apart from that there are several instances under which you cannot opt for the undercut and you need a fade style.
So it goes without saying that the first point of difference is that the fade is a more appropriate hairstyle for professional and the undercut is a more preferable hairstyle for college goers and for people who enjoy a casual hairstyle.
Apart from this the fade is also a better option for men with scanty hair because undercut directly trims down your hair length that may make you appear bald where as the fade actually make your hair appear thicker.
Also the fade is a hairstyle that is more versatile than the undercut so if you’re the kind of person who likes to combine several different kinds of hair style when the fade’s a better option for you as compared to the undercut.