What's the difference between acne and a folliculitis pustule?

Types of acne. Acne can be whiteheads, blackheads, papules (red bumps), pustules (like the folliculitis pustule) and or cystic deep acne. Folliculitis is just a hair follicle that is infected and pustule means that particular follicle also had pus. So this is just a form of acne.