CLOTHES are made of "CLOTH".
CLOTHING is what I'm wearing.All our clothes are items of CLOTHING.
to put on clothes = TO DRESS [ to get dressed ] = (the act)
to wear clothes = TO HAVE CLOTHES ON [ to be dressed ] ≠ (to be naked)
DRESS CODE = CASUAL vs. FORMAL
In formal cases, we wear a SUIT = 2 or 3 items
= "a three-piece suit" (marriages)