Warts are not to be confused with pimples or black heads or even acne.

Warts are growths that develop after contracting certain types of the Human Papilloma Virus or HPV for short.

HPV is an incurable virus, you can get vaccinated against certain types of HPV but not all of them.

Wart have different looks:

Clusters

Single

Flat

Rough

Smooth

There are also many variations of warts:

Hand Warts

Filiform

Plantar

Seed

Genital

Oral

Periungual

Animal

These are all caused by different strains of HPV.

More Information: Warts