ཐེག་པ་གསུམ། — the three yānas (“vehicles”), three scopes of motivation and method, each one containing the previous.

VehicleTibetanGoalMethod
Hinayana (lesser vehicle)ཐེག་དམན།Personal liberation from samsara — arhatshipRenunciation, ethics, analysis of the 4 Noble Truths
Mahayana (great vehicle)ཐེག་ཆེན།Buddhahood for the benefit of all beingsBodhicitta, the six perfections, emptiness
Vajrayana (diamond vehicle)རྡོ་རྗེ་ཐེག་པ།The same buddhahood, in one lifetimeTantra: empowerment, deity visualization, mantra

Vajrayana is not a fourth goal but a swift set of methods within Mahayana, which is why Tibetan Buddhism is Mahayana in view and Vajrayana in practice.

Hinayana is a label coined by Mahayana authors and carries a dismissive tone; Theravada is the respectful name for the living tradition. The bodhisattva vows explicitly forbid denigrating it.