Psychokinesis is an umbrella term for any ability that involves manipulating matter with the mind. However, most people are usually specialized in only one of these areas, and rarely advance their psychokinetic abilities beyond their specialty. The word kinesis comes from Latin meaning movement and the other comes from the Greek meaning mind.
Parapsychology researchers have described multiple cases of psychokinetic/telekinetic effects within their laboratory and a few cases outside of the lab. Micro-PK (also micro-TK) is a very small effect, such as the manipulation of molecules, atoms, subatomic particles, etc, that can only be observed with scientific equipment. Macro-PK (also macro-TK) is a large-scale effect that can be seen with the unaided eye.