1. Vogelkunde   accountancy   sociology   ornithology   anthropology   Hint Half-n-half Clue   2. Radiologie   telegraphy   radiology   archeology, archaeology   sociology   Half-n-half Clue   3. Entomologie   aeronautics   calligraphy   entomology   sociology   Half-n-half Clue   4. Rheologie   radiology   archeology, archaeology   rheology   accountancy   Half-n-half Clue   5. Seismologie   seismology   ornithology   sociology   astrology   Half-n-half Clue   6. Choreographie   telegraphy   choreography   seismology   archeology, archaeology   Half-n-half Clue   7. Astrologie   accountancy   topology   rheology   astrology   Half-n-half Clue