| Similarity | Rank | |
|---|---|---|
| 4-stroke | 0.830 | 97106 |
| DOHC | 0.825 | 98578 |
| turbocharger | 0.823 | 69974 |
| six-cylinder | 0.818 | 82610 |
| 4-cylinder | 0.814 | 74796 |
| four-stroke | 0.813 | 92413 |
| supercharger | 0.808 | 66991 |
| turbocharged | 0.806 | 42047 |
| four-cylinder | 0.800 | 43423 |
| intercooler | 0.787 | 86072 |
| powerplant | 0.774 | 57281 |
| ducted | 0.774 | 91724 |
| brushless | 0.770 | 80482 |
| exhaust | 0.764 | 9598 |
| carburetors | 0.763 | 91266 |
| kW | 0.763 | 27413 |
| V-8 | 0.760 | 53275 |
| 4-liter | 0.759 | 89522 |
| two-stroke | 0.758 | 79959 |
| cylinder | 0.754 | 10647 |
| combustion | 0.753 | 15295 |
| 5-liter | 0.753 | 69502 |
| radiator | 0.748 | 21060 |
| 6-liter | 0.748 | 87536 |
| diesels | 0.746 | 55020 |