Corozo or Corosso is known as the fruits that occur in different species of palms of the Phytelephas family in different places in South America. Tagua is the name of the fruit of the palm tree Phytelephas Aequatorialis or Phytelephas Macrocarpa. Basically they describe the same thing, only that tagua is the specific name of the palm Phytelephas Aequatorialis.