As verbs the difference between complete and high
is that
complete is while
high is (obsolete) to rise or
high can be to hie; to hasten.
As a noun high is
(obsolete) thought; intention; determination; purpose or
high can be a period of euphoria, from excitement or from an intake of drugs.
As an adjective high is
elevated in position or status; above many things.
As an adverb high is
in or to an elevated position.