blocking
| Signal
| Blocking | |
| chem. | blocking |
| Signal | |
| gen. | signal; code; cue; marine code |
| law | call |
| mining. | command |
| survey. | beacon |
| tech. | intelligence |
| Signal- | |
| econ. | signaling; signalling |
| |||
| blocking | |||
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blocking : 9 phrases in 4 subjects |
| Communications | 4 |
| Electronics | 2 |
| General | 1 |
| Life sciences | 2 |