1.
People you know, not close friends
2.
A person who likes to be social
3.
A person who prefers quiet time
4.
Close, private, personal
7.
Strong, unable to break
8.
Efforts or attempts to do something important
10.
Natural and coming from within
13.
To break down over time
14.
Ideas that are the opposite of each other
15.
To put time and effort into something in order to get something positive back later.