What if? Metropolis - City Name Development

For my city's name I thought that a statement that describes an element of the city (coral city, rising from water/sea, always growing etc) and then roughly translated into German wound be good as my collaboration artist, Beate Kuhn is German. I went on Google translate and translated words I felt related to my city into German, and tried stitching a few together.

island - Insel

islands - Inseln

coral - Koralle

city - Stadt

dry - trocken

giant - Riese

emerge - entstehen

large - groß

pieces - Stücke

ever growing - wachsenden

growing - wachsend

always - immer

forever - bis in alle Ewigkeit

growth - Wachstum

eternal - ewig

ocean - Ozean

living - Lebensunterhalt

alive - am Leben

walls - Wände

breaching - Verletzung

rock - rock

living walls - Wohnwände

eternal growth - ewige Wachstums

building - Gebäude

Here's a few I came up with: 

Verletzung (breaching) + ewig (eternal) = Verletzewige 

Koralle (coral) + Stücke (pieces) = Koralstuk

Koralle (coral) + Stadt (city) = Korallstadt

Koralle (coral) + entstehen (emerge) + Inseln (islands) = Korentseln
wachsenden (ever growing) + Insel (islands) = Sendsel
Lebensunterhalt (living) + Gebäude (building) = Sunterbaud
Lebensunterhalt (living) + Inseln (islands) = Sunterseln or Lebenseln

I also thought of Korallia, because I was thinking they all sounded a little too contrived, but after going back over them I have decided on Sendsel.