| Similarity | Rank | |
|---|---|---|
| CIA | 0.759 | 9037 |
| CIA's | 0.747 | 49798 |
| C.I.A. | 0.734 | 70543 |
| secret | 0.733 | 2130 |
| declassified | 0.711 | 65300 |
| clandestine | 0.704 | 31163 |
| counterintelligence | 0.698 | 97942 |
| MI6 | 0.697 | 65381 |
| NSA | 0.694 | 15450 |
| espionage | 0.692 | 26544 |
| undercover | 0.692 | 20065 |
| FBI | 0.691 | 8135 |
| covert | 0.691 | 19630 |
| Pentagon | 0.690 | 13391 |
| NSA's | 0.687 | 63946 |
| F.B.I. | 0.679 | 79411 |
| spy | 0.676 | 9669 |
| Snowden's | 0.672 | 76028 |
| Snowden | 0.665 | 24302 |
| Pentagon's | 0.665 | 55905 |
| KGB | 0.664 | 38238 |
| GCHQ | 0.664 | 85561 |
| Mossad | 0.663 | 48067 |
| spies | 0.645 | 22486 |
| code-named | 0.643 | 85772 |