Nirvana
The equivalent for this word is usually given in English as, 'Realisation', 'Liberation'. In Sanskrit language this word ' Nirvana' indicates a state of being, which is, 'Naked from all attributes'. It is easy for all of us to know, physical nakedness by dis-robbing. Whereas, this word ' Nirvana' points at a mental perceiving modality, which has shed the scintillating robes of make-believe values and judgments, not about the mere outer world, but essentially about it's own ego-self. It is only by dying of one's psychological memory bias; the state of ' Nirvana' is realized.