| Similarity | Rank | |
|---|---|---|
| CO2 | 0.810 | 9992 |
| dioxide | 0.805 | 10273 |
| C02 | 0.788 | 94587 |
| gasses | 0.773 | 45276 |
| gases | 0.754 | 11662 |
| carbon | 0.739 | 3087 |
| nitrogen | 0.718 | 12237 |
| nitrous | 0.707 | 43783 |
| emissions | 0.701 | 4569 |
| vaporization | 0.696 | 90978 |
| NOx | 0.688 | 55787 |
| particulates | 0.686 | 55487 |
| tailpipe | 0.686 | 80378 |
| ammonia | 0.685 | 21773 |
| carbonic | 0.685 | 83563 |
| ozone | 0.682 | 18222 |
| gaseous | 0.682 | 42339 |
| vapour | 0.682 | 35280 |
| vaporizing | 0.682 | 95675 |
| oxides | 0.680 | 42880 |
| combustion | 0.678 | 15295 |
| hydrogen | 0.677 | 9917 |
| sulphur | 0.675 | 34384 |
| aerosols | 0.675 | 54502 |
| refrigerants | 0.674 | 92454 |