| close observation | 3.03 | He has been placed under close observation. | ||
| similar observation | 2.63 | A similar observation was made for men. | ||
| new observation | 2.17 | This is not a new observation. | ||
| medical observation | 1.91 | A third worker was under medical observation. | ||
| direct observation | 1.84 | From their direct observations they absorb a model of Marriage. | ||
| personal observation | 1.84 | Mrs. Clinton shared some personal observations. | ||
| careful observation | 1.51 | ...careful observation of the movement of the planets. | ||
| detailed observation | 1.38 | The detailed observations are to last until the end of the millennium. | ||
| general observation | 1.38 | That is probably correct only as a general observation. | ||
| recent observation | 1.32 | It certainly conforms to recent observations, astronomers said. | ||
| casual observation | 1.25 | Even casual observation makes this theory improbable. | ||
| same observation | 1.25 | Would the same observations ring true? | ||
| astronomical observation | 1.18 | Astronomical observations were to begin Friday. | ||
| further observation | 1.05 | A further observation is necessary. | ||
| interesting observation | 1.05 | An interesting observation. | ||
| psychiatric observation | 1.05 | Rosenthal was being held for psychiatric observation. | ||
| keen observation | 0.99 | The details are piled upon details, with dry humor and keen observation. | ||
| political observation | 0.79 | Ramey also makes an astute political observation. | ||
| scientific observation | 0.72 | He took special pride in his scientific observations from orbit. | ||
| astute observation | 0.66 | Astute observations? |