is a specific kind of: carnivorous plant.

is a broader term that covers: common pitcher plant, huntsman's cup, huntsman's cups, Sarracenia purpurea | hooded pitcher plant, Sarracenia minor | huntsman's horn, huntsman's horns, Sarracenia flava, trumpets, yellow pitcher plant, yellow trumpet | California pitcher plant, Darlingtonia californica | sun pitcher | tropical pitcher plant.

is a member of: order Sarraceniales, Sarraceniales.