1 to exchange

2 exchange

3 communication

4 interaction

5 to have social contact (with sb)

1 to flow

2 to disseminate

3 to circulate or spread

4 to move or drift

5 to degenerate

6 to banish or send into exile

7 stream of water or sth resembling one

8 class, rate or grade

1 meteor

2 shooting star

1 meteor shower

1 rogue

2 hoodlum

3 gangster

4 immoral behavior

1 man seeks his way up just as water seeks its way down (idiom)

2 one should constantly strive to make progress

1 to commit to the waters (idiom); to lose sth irrevocably

1 sb condemned by history (idiom)

1 widely praised (idiom); with an extensive public reputation

1 to wallow in the mire with sb (idiom); to follow the bad example of others