| filt | |
| industr. | Walkfilz |
| industr. construct. | feiner Filz; Filz; filziger Stapel |
| filter | |
| gen. | Atemgeräteinsatz |
| construct. | Filterzone |
| el. | Filterkreis; Wechselstromseitiges Filter |
| environ. | Filter; Staubabscheider |
|
oversampling : 3 phrases in 2 subjects |
| Information technology | 2 |
| Municipal planning | 1 |