01. Śrāvakayāna or the the Shravaka yana. (Disciple)
The Hearer vehicle: The basic teachings, which are path that meets the goals of someone who achieves liberation after listening to the teachings of a samyaksambuddha (fully enlightened buddha). These basic trainings include trainings such as the four noble truths.
(Generally followed by the Theravada tradition, see link to Buddhist sects below)
02. Pratyekabuddhayāna or the the Pratyekabuddha yana. (Solitary Buddha).
The pratyekabuddha is an individual who independently achieves liberation without the aid of teachers or guides and without teaching others to do the same. Oftentimes mentioned as private or solitary Buddha they may remain in seclusion. Pratyekabuddhas may give moral teachings but do not bring others to enlightenment. They leave no sangha as a legacy to carry on the Dhamma.
These teachings are an expansion of Śrāvakayāna.
03. Bodhisattvayāna or the Bodhisattva yana. (Enlighted One)
The bodhisattva attains liberation and wishes to benefit as many beings as possible. A bodhisattva who has accomplished this goal is called a samyaksambuddha. A samyaksambuddha can establish the Dharma and lead disciples to enlightenment. These teach on buddha nature and the six perfections.
(Generally followed by the Mahāyāna tradition, see link to Buddhist sects below)
