The original meaning of the word 'mind' was simply 'the capacity of memory'.
Then, from the 14th century, the meaning gradually evolved.
Mind is now defined as:
The totality of all that is conscious and the unconscious, including our capacities, functions and faculties of awareness, memory, knowing, thinking, feeling, will, desire, instinct, intuition, imagination, and visualisation.
The seat of human consciousness.
Not a physical aspect of the body.
Mind is therefore far more than many believe it to be.
The analogy of an iceberg is appropriate. There is the part of mind above the surface - that we can be aware of within our conscious awareness - and there is the far larger part we are never aware of that lies beneath the surface - in our unconscious.