What is the difference between Vijñāna, Manas and Citta? Together they refer to one's mental processes as a whole. Separately, what are they and how are they different?
'Citta' (the C is pronounced as ch in cheetah) is a generic word for mind, including thoughts as well as emotional state. When the Chinese translated Buddhist texts they often used 'shin', the heart-mind, to indicate citta.

'Manas' (both As are pronounced as in Adam) is the "inner eye" that can see thoughts, memories, and one's state of mind (citta).

'Vijnana' (jna is pronounced as jnya - i.e. with soft n) is experience of reality that arises from mind's ability to recognize and interpret new stimuli by relating and comparing them with memories of past experiences.