What are the Protoss transport units in SC and SCII

Well in starcraft II there is the pylon and the warp prism
in starcaft I i think its just the pylon
The pylon can transport created units immediately to that area where the pylon is. Many ppl call this a proxy pylon because u can cheese this in ur opponents base, warp in like 2 zealots and harass
The warp prism functions like a pylon, pumping in units. But it can move, and trasport units like a medivac. Its kinda expensive so pros dont particularly use them too often.