| A | B |
| aqueous | made from water |
| hydraulic | in engineering, the use of water to create power |
| Aquarius | a constelation pictured as a man carring water |
| hydroponic | the growing of plantd in water |
| aqueduct | a pipe or channel that carries water |
| aquamarine | the blue-green color of water |
| aquarelle | a painting done in transportation |
| aquatic | growing or living in water |
| hydrant | a pipe where water may be drawn |
| hydrophobia | fear of water; rabies |