1. Rigpa (Awareness): The core of Dzogchen teachings, represents the inherent, enlightened nature of mind, beyond all dualistic thought and conceptualization.
2. Ground, Path, and Fruition: The three stages of Dzogchen teachings. Ground describes the inherent clarity and awareness of the mind (the natural state); Path comprises the practices and methods used to recognize this inherent state; Fruition is the realization of Ground upon traversing the Path.
3. Kadag (Primordial Purity): Refers to the mind's original or innate purity, indicating that our deepest nature has always been pure from the very beginning.
4. Lhun Grub (Spontaneous Presence or Natural Formation): Refers to the self-arising or effortless manifestation of phenomena in the mind, stemming from the mind's inherent, pure nature.
5. Ngo sprod (Direct Introduction): A practice in Dzogchen where a master 'introduces' or 'points out' the student's inherent enlightened awareness, or Rigpa.
6. Ma Rigpa (Unawareness or Ignorance): A state of failing to recognize, or being unaware of, our inherent nature. It is a failure to realize Kadag and Lhun Grub, obscuring the mind's inherent nature.
7. Karmic winds: A metaphor used in Buddhism to describe habitual tendencies and patterns that lead us astray from the direct recognition of our inherent enlightened nature.
8. Trekchö (Cutting Through): Literally meaning 'cutting through rigidity', Trekchö is the practice of recognizing and resting in Rigpa, the natural state of the mind. The goal here is to cut through the delusions and mental fabrications to see the true nature of the mind - clear, open, unobscured, and luminous. It is considered to be like the 'mother' practice, as it helps the practitioner to always remain in this natural state, like a mother cradling her child.
   1. Trekchö ("cutting through" or "thoroughly cutting through") is the practice of recognizing the nature of mind. The nature of mind in Dzogchen teaching refers to the inherent state of our mind, which is clear, open, and luminous. This practice is about recognizing and resting in this natural state, which is beyond concepts, thoughts, and emotions. It's like looking directly at the sky without focusing on the clouds. The practitioner learns to remain in this state of pure awareness during meditation and in daily life.
9. Tögal (Direct Crossing or Leapover): Often taught after a practitioner has a robust experience of Trekchö, Tögal is the practice of directly realizing and stabilizing the clear light of awareness. Using unique methods, Tögal aims to directly realize the unity of appearance and emptiness, or clarity and emptiness. It is often associated with the spontaneous appearance of light-spheres or 'rainbows' in the advanced stages of practice, and is considered the 'child' practice, as it make us reborn in the pure condition of our original state.
   1. Tögal ("direct crossing" or "leap over") is an advanced Dzogchen practice that is typically only undertaken after gaining stability in Trekchö. Tögal practices are aimed at realizing the spontaneous presence of the enlightened state. They involve unique visualizations and gazes that work directly with the nature of perception, helping the practitioner to transcend dualistic mind and experience the non-dual reality directly. Tögal can lead to visions of various lights and colors, known as "spontaneously present luminosities," which are seen as manifestations of the practitioner's Buddha-nature.
10. Yeshe (Wisdom): Refers to the knowing quality of Rigpa, often described as primordial wisdom or inherent wisdom.
11. Sem (Mind): Refers to dualistic thinking, the ordinary mind driven by thoughts and emotions. This is in contrast with Rigpa, the inherent awareness beyond dualistic mind.
12. Tsawé Lam (Path of Seeing): Higher stage in Buddhist practice, where practitioners realize and recognize the nature of mind.
13. Longchen Nyingthik (The Heart Essence of the Vast Expanse): A collection of Dzogchen teachings in the Nyingma tradition of Tibetan Buddhism.
14. Peiwar gChirol (Flight of the Garuda): An important text presenting the teachings of Trekchö and Tögal.
15. Nyingthig Yabzhi (The Quartet of the Heart-Essence): A compendium of Dzogchen texts embodying the teachings of Trekchö and Tögal.
16. Nyamshag (Experience and Realization): The term denotes the correlation between one's personal meditation experience and the realization of teachings received.
17. Nirmanakaya, Sambhogakaya, Dharmakaya (Three Kayas): The three dimensions of Buddhahood - nirmanakaya is the physical manifestation, sambhogakaya is the dimension of deep enjoyment and satisfaction, and dharmakaya represents the unchanging, timeless reality.
18. Thigle (Sphere or Bindu): Visual aspects of natural light, also known to appear during Togal practice.
19. Rainbow Body (jalus): A phenomena associated with the highest levels of Dzogchen practice, where the physical body is transformed into a body of light at the time of death.

These terms further enrich the lexicon of Dzogchen and help furnish an even deeper understanding of this profound path. As always, they are not just terms for intellectual understanding, but point to profound aspects of practice and realization in the Dzogchen path.