The document defines and provides synonyms for the terms "Sharira" and "Kriya" in Ayurveda. It states that Sharira refers to the living body composed of the panchamahabhutas in which life resides. Kriya refers to any act or function, physical or psychological, related to the living body. It then describes the three doshas - Vata, Pitta, and Kapha that affect the physical body, and the two mental doshas of Rajas and Tamas. Finally, it outlines the relationships between the tridoshas, panchmahabhutas, and trigunas.