Since lay people follow the path to Nibbana with their worldly attachments, their journey is slow like a walk of a peacock. In fact, a monk’s progression is fast like a movement of a swan because his journey is free from any attachments. Thus, a person who would like to attain Nibbana promptly will give up all his attachments and becomes a monk. If the person who joined the monkhood is a male, then he will be called a Bhikkhu while a female be called a Bhikshuni. These Bhikkhu and Bhiksuni start to protect a higher set of percepts than the five percepts of a layperson (disciple who follows a lay life). From that point onward, they start to practice the path to Nibbana while teaching others of what Buddha said.