| Similarity | Rank | |
|---|---|---|
| infrared | 0.871 | 14360 |
| infra-red | 0.795 | 68775 |
| Sensor | 0.750 | 32189 |
| Ultraviolet | 0.726 | 62080 |
| IR | 0.719 | 18197 |
| Thermal | 0.719 | 25485 |
| Radar | 0.700 | 27987 |
| Microwave | 0.698 | 39684 |
| Satellite | 0.696 | 16477 |
| Detectors | 0.696 | 93824 |
| Pulsed | 0.685 | 94937 |
| Handheld | 0.682 | 58851 |
| Detector | 0.680 | 57528 |
| Ultrasonic | 0.673 | 67806 |
| imager | 0.671 | 87394 |
| Laser | 0.669 | 11855 |
| Sensors | 0.669 | 45973 |
| Radiation | 0.668 | 24967 |
| Diode | 0.667 | 86694 |
| Beam | 0.665 | 27938 |
| Polarized | 0.660 | 74047 |
| Heaters | 0.659 | 66548 |
| Iridium | 0.659 | 67717 |
| Optical | 0.657 | 24911 |
| Halogen | 0.654 | 87105 |