| Subject | Danish | English |
| mus. | cluster akkord | tone cluster |
| med. | cluster headache | Horton's headache (hemicrania periodica neuralgiformis) |
| med. | cluster headache | Horton's syndrome (hemicrania periodica neuralgiformis) |
| med. | cluster headache | histaminic headache (hemicrania periodica neuralgiformis) |
| med. | cluster headache | cluster headache (hemicrania periodica neuralgiformis) |
| med. | cluster headache | histaminic cephalalgia (hemicrania periodica neuralgiformis) |
| med. | cluster headache | Horton's cephalalgia (hemicrania periodica neuralgiformis) |
| IT | cluster-moduler | cluster modules |
| gen. | cluster-platform | cluster platform |
| phys.sc. | cluster-tælling | cluster counting |
| phys.sc. | cluster-tælling | blob counting |