Psychokinesis is an umbrella term for any ability that involves using the mind to manipulate something, and some other, more specific, abilities may be acquired as a result. 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 movement and the other comes from the Greek meaning mind.
Parapsychology researchers describe two basic types of measurable and observable psychokinetic and telekinetic effects in experimental laboratory research and in case reports occurring outside of the laboratory. 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.