| A | B |
| chronothermal | relating to both time and temperature |
| geothermal | related to the heat of Earth's interior |
| thermometer | instrument which measures heat |
| hypothermia | condition of reduced temperature |
| thermal | of or related to heat; caused by heat |
| thermography | recording a visual image of body heat using infrared devices (medical) |
| thermogenic | producing heat (physiology) |
| dehydrate | to take water from |
| hydrant | device for drawing water |
| hydrothermal | of or related to hot water |
| hydrogenic | caused by the action of water |
| hydrophone | receiver for listening to sound transmitted through water |
| hydrogeology | study of subsurface water through rocks |
| hydropathy | treatment of injury or disease with water (medical) |
| hydrograph | diagram of the levels or amount of water flow in a river |
| hydronymy | naming or names of bodies of water (history) |
| primeval | primitive |
| subliminal | below the level of consciousness |
| disposition | personality or temperament |
| placid | calm; untroubled |
| apprehensive | fearful |
| garish | too bright |
| recounted | described in detail |
| sullen | gloomy; pouting |
| furtively | stealthily, as if to avoid being seen or heard |