The Pirc is a poor man's KID. Just think about the first two moves - in the Pirc white has a perfect centre: d4 and e4. In the KID he has c4 and d4. The c4 pawn is additionally blocking his bishop from its most natural attacking position of c4.
The Pirc usually has an open centre from the start while the KID usually has a closed one, so the character of the game is usually quite different. The KID is known for bizarre mating attacks that come out of nowhere, due in part to the closed centre, even strong computers regularly get confused by it and calculate wrong.
Forgive me if this is a stupid question but I am a newbie when it comes to openings. Does the Pirc and the KID lead to a similar game? To me it seems so as black lets white occupy e4 and d4 while playing d6, g6, Bg7, Nf6, 0-0. Are they basically the same opening like the hippo defence leads to a similar game no matter if white starts with e4 or d4?