| water vapor → IsA → a greenhouse gas | 0.68 | |
| water vapor → IsA → dominant greenhouse gas | 0.56 | |
| water vapor → IsA → powerful greenhouse gas | 0.56 | |
| water vapor → IsA → gas | 0.52 | |
| water vapor → IsA → the most abundant greenhouse gas | 0.49 | |
| water vapor → IsA → the most abundant volcanic gas | 0.42 | |
| water vapor → IsA → small amount of water vapor | 0.41 |