| English thesaurus | |||
| |||
| PTR (or Report) | |||
|
Problem Trouble : 18 phrases in 12 subjects |
| Automated equipment | 2 |
| Computer networks | 1 |
| Computers | 1 |
| Electronics | 1 |
| General | 1 |
| Information technology | 3 |
| Mass media | 1 |
| Mechanics | 1 |
| Military | 2 |
| Oil and gas | 2 |
| Quality control and standards | 2 |
| Robotics | 1 |