Recreate the words

How to form nouns from adjectives:

1. Add a suffix (e.g. -ment, -ness, -ity, -cy).
   similar-similarity, dark-darkness
2. Remove a suffix (for adjectives which were formed from a noun).
   hopeless-hope, artistic-artist
3. Irregular nouns.
   proven-proof, lost-loss

Be attentive! Some adjectives may form several nouns, so check which one you need before writing it in.

1. Local
   [ ] are usually not very excited about tourists hanging around.
2. When I came to my first cosmopolitan city, I was so anxious and got lost in a
   [ ].
3. Not that long ago PayPass systems were something of an
   [ ], but now we've got used to them.
4. The increase of the population in the cities is called
   [ ].
5. A rapid
   [ ] follows the areas after nuclear disasters.
6. Fighting
   [ ] in developing regions is one of the global issues nowadays.