| Subject | English | French |
| construct. | collecting tank, sumppan, cesspool also in a gutter, then = head of stack | cuvette de la descente |
| construct. | collecting tank, sumppan, cesspool also in a gutter, then = head of stack | réservoir-collecteur |
| comp. | head stack | tête magnétique à plusieurs pistes |
| comp. | head stack | groupe de têtes magnétiques |