Blackheads and whiteheads are the two types of acne. Blackheads are black in colour around your nose, chin and neck area. Blackhead is formed by the excess oil. Whiteheads are white in colour and also known as pimples.
whiteheads are not "known" as pimples. whiteheads are the starting point of pimples. they have that white pus in it that grows to become a pimple. at the max you can call whiteheads as zits.