Mind - Active thoughts
Heart - Active feelings
Dhyana - State of Thoughtlessness (No-mind) --- Loosely translates to "meditation" in west
Meditation - Attempt to attain Dhyana
Samadhi - State of no-thought, No-feeling nor sensation (No-mind, No-heart)

Sāstra - Complete exhaustive infallible documentation by enlightened sages.
Yoga(m) - State in which the individual consciousness (atma) abides with the total consciousness (param).
Realization (Gnyanam) - Ability to clearly distinguish the reality from the illusions endued upon oneself.
Enlightenment (Nirvana) - State of being in absolute oneness, undeterred by any form of illusions anymore.
Liberation (Mukthi) - Relieved from the cycle of birth and death