| Similarity | Rank | |
|---|---|---|
| ultraviolet | 0.793 | 15445 |
| ionise | 0.788 | 26893 |
| uv-b | 0.745 | 63631 |
| radioactivity | 0.743 | 14083 |
| uvb | 0.742 | 33409 |
| polonium | 0.740 | 36755 |
| ultra-violet | 0.740 | 23981 |
| uva | 0.730 | 29497 |
| synchrotron | 0.728 | 42611 |
| irradiation | 0.725 | 17771 |
| infrared | 0.722 | 15105 |
| ionize | 0.720 | 32044 |
| iodine-131 | 0.716 | 51608 |
| electro-magnetic | 0.708 | 37643 |
| electromagnetic | 0.707 | 11977 |
| gamma | 0.705 | 10543 |
| ozone | 0.705 | 5037 |
| gamma-ray | 0.704 | 42486 |
| stratospheric | 0.701 | 25293 |
| caesium-137 | 0.700 | 59747 |
| neutron | 0.695 | 8882 |
| carcinogen | 0.695 | 23531 |
| radioactive | 0.692 | 6851 |
| wavelength | 0.691 | 8541 |
| positron | 0.687 | 41391 |