1. water
2. (after a name) ... River
3. to swim (used mostly in 會水 huìshuǐ and 水性 shuǐxìng)
4. (coll.) lacking in substance; shoddy
5. (bound form) additional cost; extra income
6. classifier for washings of a garment

1. thread
2. string
3. wire
4. line
5. (after a number) tier (unofficial ranking of a Chinese city)

classifiers: 條, 股, 根