| Similarity | Rank | |
|---|---|---|
| deuterium | 0.848 | 86208 |
| Hydrogen | 0.833 | 29099 |
| gaseous | 0.822 | 42339 |
| methanol | 0.817 | 42034 |
| hydride | 0.799 | 95787 |
| sulfur | 0.794 | 22001 |
| hydrocarbons | 0.788 | 32458 |
| fluorine | 0.784 | 79157 |
| peroxide | 0.782 | 20900 |
| protons | 0.780 | 41243 |
| hydroxyl | 0.780 | 64812 |
| hydrocarbon | 0.778 | 36213 |
| gases | 0.778 | 11662 |
| hydroxide | 0.777 | 49273 |
| ammonia | 0.775 | 21773 |
| ionized | 0.774 | 59187 |
| dioxide | 0.773 | 10273 |
| helium | 0.770 | 31291 |
| sulphuric | 0.767 | 87525 |
| propellant | 0.767 | 54780 |
| atoms | 0.761 | 14412 |
| nitrogen | 0.761 | 12237 |
| methane | 0.760 | 19799 |
| proton | 0.759 | 32838 |
| sulfide | 0.758 | 49224 |