Sculpture- a physical encounter between an object and an embodied being in an environment.

Sculpture must, occupy, interact with or enclose actual space.

common methods are; carving, modeling, construction, reproduction, ready-mades. 

Dance- Movement material derived from human movement and behaviour, developed and presented to give emphasis, in a time based structure, with a visual, sonic and dramatic element. Choreography being a scaffold for action.

Performance Art- a form involving the artists body, time, space and an audience, and/or derivatives of these things.

Live Art-  "Live Art should not be understood as a description of an art form but as a strategy to ‘include' a diversity of practices and artists that might otherwise find themselves ‘excluded' from all kinds of policy and provision and all kinds of curatorial contexts and critical debates." [Live Arts Development Agency] Temporal, time based.

Although I find definitions hugely uninteresting to discuss [ I prefer to discuss possibility and boundlessness, rather than limitations and edges], I am posting these definitions to indicate what I understand them to be. Now we are on the same page.