As nouns the difference between high and middle
is that
high is (obsolete) thought; intention; determination; purpose or
high can be a period of euphoria, from excitement or from an intake of drugs while
middle is a centre, midpoint.
As adjectives the difference between high and middle
is that
high is elevated in position or status; above many things while
middle is located in the middle; in between.
As an adverb high
is in or to an elevated position.
As a verb high
is (obsolete) to rise or
high can be to hie; to hasten.