1) Advance 2) Betterment 3) Improvement 4) Revitalisation 5) Revitalization 6) Revival 7) Revivification 1) Rebirth 2) Renaissance 3) Renascence 4) Resuscitation 5) Revitalisation 6) Revitalization 7) Revival 8) Revivification 
• (n.) The act of rising again; resurrection.
[Noun] Plural form: resurgences. Something happening again or growing stronger.
A spring where a stream, which has a course higher up on the surface, reappears lower down at the surface.
An increase of a pest population after a period of decline, to a level higher than its original one, especially when the decline is caused by a pest control measure.
Re·sur'gence noun The act of rising again; resurrection. 
revitalization noun bringing again into activity and prominence; `the revival of trade`; `a revival of a neglected play by Moliere`; `the Gothic revival in architecture`
Where a river or stream that has fallen into a cave system, returns to the surface. (Exurgence is where only percolated water returns to the surface and the term 'spring' refers to the point where any underground water returns to the surface.)
[SAT terms] bringing again into activity and prominence bringing again into activity and prominence