Shamatha and vipashyana

• Samatha (Pāli), (Sanskrit: शमथ, śamatha; also romanized to shamatha, Tib. ཞི་གནས་, shyiné; Wylie: zhi gnas; English: "calm" or "tranquility") refers to that dimension of Buddhist spiritual cultivation (Bhavana) concerned with the calming of the mind (Citta) and its 'formations' (Sankhara).
• Vipassanā (Pāli) or vipaśyanā (विपश्यना, Sanskrit, Chn. 觀 guān;Tib. ལྷག་མཐོང་, lhaktong; Wyl. lhag mthong) in the Buddhist tradition means insight into the true nature of reality.