| rare occasion | 16.72 | It happens on rare occasions. | ||
| rare case | 14.29 | But this is a rare case. | ||
| rare disease | 12.05 | He has a rare disease. | ||
| rare opportunity | 11.19 | To be sure, it was a rare opportunity. | ||
| rare moment | 9.94 | It was a rare light moment. | ||
| rare appearance | 9.55 | Premier makes rare public appearance. | ||
| rare form | 9.08 | He contracted a rare form of cancer. | ||
| rare exception | 7.44 | There are rare exceptions. | ||
| rare species | 7.37 | Many were rare species, they said. | ||
| rare book | 7.18 | Rare books. | ||
| rare instance | 6.91 | Are these rare instances? | ||
| rare chance | 6.78 | This rare chance to play mattered to Lane. | ||
| rare event | 6.25 | A rare event these days. | ||
| rare glimpse | 6.06 | Oh, there have been rare glimpses of imperfection. | ||
| rare bird | 5.99 | Rare birds. | ||
| rare breed | 5.40 | Both are rare breeds. | ||
| rare sight | 5.20 | A rare sight! | ||
| rare interview | 4.87 | A rare interview. | ||
| rare visit | 4.87 | On one of his rare visits, | ||
| rare disorder | 4.74 | Genzyme is focusing on rare genetic disorders. |