| English thesaurus | |||
| |||
| HDCD (CD, Sony, Phillips) | |||
|
High Density : 47 phrases in 13 subjects |
| Agriculture | 4 |
| Communications | 2 |
| Earth sciences | 3 |
| Electronics | 9 |
| General | 4 |
| Industry | 1 |
| Information technology | 12 |
| Materials science | 1 |
| Mathematics | 2 |
| Medical | 1 |
| Microsoft | 3 |
| Statistics | 1 |
| Transport | 4 |