1. Rheologie   rheology   aeronautics   choreography   etiology, aetiology   Hint Half-n-half Clue   2. Astrologie   astrology   etiology, aetiology   radiology   sociology   Half-n-half Clue   3. Seismologie   archeology, archaeology   ornithology   accountancy   seismology   Half-n-half Clue   4. Buchhaltung   choreography   radiology   ornithology   accountancy   Half-n-half Clue   5. Soziologie   topology   seismology   radiology   sociology   Half-n-half Clue   6. Kalligraphie   calligraphy   sociology   archeology, archaeology   aeronautics   Half-n-half Clue   7. Kosmetik   entomology   telegraphy   cosmetology   anthropology   Half-n-half Clue