| Share | Phrase |
| 16.49% | volatile [time periodicity] fuel |
| 10.18% | volatile [time periodicity] liquid |
| 7.18% | volatile [time periodicity] compound |
| 7.05% | volatile [time periodicity] component |
| 4.66% | volatile [time periodicity] impurity |
| 4.45% | volatile [time periodicity] vapor |
| 4.24% | volatile [time periodicity] product |
| 4.20% | volatile [time periodicity] material |
| 3.81% | volatile [time periodicity] fraction |
| 3.39% | volatile [time periodicity] solvent |
| 3.18% | volatile [time periodicity] species |
| 2.86% | volatile [time periodicity] mixture |
| 2.54% | volatile [time periodicity] contaminant |
| 2.39% | volatile [time periodicity] oil |
| 2.19% | volatile [time periodicity] hydrocarbon |
| 2.19% | volatile [time periodicity] memory |
| 1.90% | volatile [time periodicity] constituent |
| 1.90% | volatile [time periodicity] ingredient |
| 1.69% | volatile [time periodicity] matter |
| 1.68% | volatile [time periodicity] substance |
| 1.47% | volatile [time periodicity] gas |
| 1.32% | highly [degree] volatile |
| 1.27% | volatile [time periodicity] mist |
| 1.17% | highly volatile |
| 0.97% | less [degree] volatile |
| 0.94% | volatile [time periodicity] content |
| 0.94% | volatile [time periodicity] end |
| 0.91% | less volatile |
| 0.86% | volatile [time periodicity] fluid |
| 0.62% | volatile [time periodicity] system |
| 0.60% | more volatile |
| 0.60% | more [degree] volatile |