| inhale through small ma… | 0.56 |
| take effect | 0.47 |
| reduce anxiety | 0.47 |
| remain in the atmosphere | 0.46 |
| provide pain relief | 0.39 |
| laugh gas | 0.39 |
| contribute to global wa… | 0.38 |
| inhalation anaesthetic | 0.37 |
| support combustion | 0.34 |
| elevate general mood | 0.33 |
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| analgesic | 0.34 |
| a variety of natural so… | 0.25 |
| side effects | 0.07 |
| safe | 0.72 |
| effective | 0.42 |
| useful | 0.40 |
| colorless | 0.40 |
| more potent than carbon… | 0.35 |
| soluble | 0.34 |
| stable | 0.34 |
| harmful | 0.25 |
| inflammable | 0.25 |
| inexpensive | 0.20 |
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| death | 0.23 |
| gas | 0.58 |
| a greenhouse gas | 0.54 |
| colorless gas | 0.52 |
| a chemical compound | 0.46 |
| sweet-smelling, non-irr… | 0.40 |
| non-allergenic, non-irr… | 0.25 |
| clear, colorless, oxidi… | 0.25 |
| an ozone depleting gas | 0.25 |
| long-lived greenhouse g… | 0.16 |
| mixed with oxygen | 0.78 |
| used in dentistry | 0.70 |
| administered | 0.65 |
| produced | 0.63 |
| administered through ma… | 0.61 |
| used in surgery | 0.52 |
| released | 0.52 |
| eliminated | 0.49 |
| inhaled | 0.49 |
| used on child | 0.46 |
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| labor pain | 0.25 |
| decade | 0.23 |