As adjectives the difference between sooner and early
is that
sooner is comparative of soon while
early is at a time in advance of the usual or expected event.
As adverbs the difference between sooner and early
is that
sooner is comparative of soon while
early is at a time before expected; sooner than usual.
As nouns the difference between sooner and early
is that
sooner is a native or resident of the American state of Oklahoma; a sports competitor representing the University of Oklahoma while
early is a shift (scheduled work period) that takes place early in the day.