Is potassium chloride salt

YES!!!

Chemical SAlts are of the form Metal cation and Acidic anion.

Examples are

RbBr = Rubidium bromide.

SrCO3 = Strontium carbomnate

Al2(SO4)3 = Aluminium sulphate

Fe(NO3)2 = Iron(II) nitrate ( or Ferric Nitrate)

These are just a few chemical salts. This list is NOT exhaustive.