 |
| English thesaurus | |||
| |||
| PERL | |||
| Pupils: 158 phrases in 16 subjects |
| British usage, not spelling | 1 |
| Earth sciences | 2 |
| Economy | 2 |
| Education | 36 |
| Electronics | 4 |
| General | 52 |
| Health care | 3 |
| Immigration and citizenship | 1 |
| Medical | 29 |
| Medical appliances | 6 |
| Microscopy | 1 |
| Physical sciences | 1 |
| Social science | 2 |
| Statistics | 13 |
| Swimming | 1 |
| Transport | 4 |