1. Ätiologie   telepathy   etiology, aetiology   ornithology   rheology   Hint Half-n-half Clue   2. Anthropologie   radiology   rheology   anthropology   cosmetology   Half-n-half Clue   3. Choreographie   entomology   choreography   radiology   aeronautics   Half-n-half Clue   4. Kalligraphie   calligraphy   entomology   astrology   telepathy   Half-n-half Clue   5. Seismologie   astrology   telegraphy   seismology   rheology   Half-n-half Clue   6. Kosmetik   cosmetology   anthropology   rheology   economics   Half-n-half Clue   7. Aeronautik   rheology   aeronautics   archeology, archaeology   telepathy   Half-n-half Clue