improvement
noun
°The act of improving; advancement or growth; promotion in desirable qualities; progress toward what is better; melioration; as, the improvement of the mind, of land, roads, etc.
""I look upon your city as the best place of improvement." -Robert South."
°The act of making profitable use or application of anything, or the state of being profitably employed; a turning to good account; practical application, as of a doctrine, principle, or theory, stated in a discourse.
""A good improvement of his reason." - Samuel Clarke."