Sri Aurobindo points out the limitations of language which make it difficult to express specifically the actual supramental action in comparison to the corresponding mental activity. We use the same terminology, as we have no other, but the actual meaning of the words must vary dramatically due to the widely diverse action of the two. What we describe, for instance, as the action of the senses and the corresponding sense perception in our normal mental awareness, is not going to match what actually takes place when the supramental sense perception is being described.
As Sri Aurobindo notes” “…the mental idea and experience of sense can give no conception of the essential and characteristic action of this supramentalised sense consciousness. Thought too in the supramental action is a different thing from the thought of the mental intelligence. The supramental thinking is felt at its basis as a conscious contact or union or identity of the substance of being of the knower with the substance of being of the thing known and its figure of thought as the power of awareness of the self revealing through the meeting or the oneness, because carrying in itself, a certain knowledge form of the object’s content, action, significance. Therefore observation, memory, judgment too mean each a different thing in the supermind from what it is in the process of the mental intelligence.”
Sri Aurobindo, The Synthesis of Yoga, Part Four: The Yoga of Self-Perfectio
n, Chapter 23, The Supramental Instruments — Thought-process , pp. 824-825