Gorilla habituation is a taming / training process of wild gorillas to that they get used to human presence. Habituation involves studying the behavior of each individual gorillas by trained researchers who regular go see them to analyze the best way they can relate and communicate with the gorillas. In the long ran they learn how to talk, give names, interact and be at ease with each other.
These are two different unique adventures and worth going for. During Gorilla habituation visitors are involved in the gorilla training and teaching process of the gorillas while gorilla trekking ties visitors to visit already habituated gorillas, familiar with human presence.