Are junction capacitance and transition capacitance the same?

Human body capacitance?  Capacitance is measured in?  What is capacitance vessels?  What is junction capacitance?  Intrinsic device capacitance?  What is reactane of capacitance?  What is use of transition capacitance?  Than what about the junction capacitance?  Junction capacitance diffusion capacitance?  Formula for capacitance of parrallel plates?  What is the difference between diffusion capacitance and junction capacitance?  For an abrupt junction Varactor diode the dependence of device capacitance C on applied reverse bias V is given by-?