1. Buchhaltung   cosmetology   topology   archeology, archaeology   accountancy   Hint Half-n-half Clue   2. Radiologie   ornithology   radiology   archeology, archaeology   theology   Half-n-half Clue   3. Astrologie   astrology   calligraphy   etiology, aetiology   ornithology   Half-n-half Clue   4. Rheologie   telegraphy   rheology   economics   topology   Half-n-half Clue   5. Ätiologie   sociology   accountancy   etiology, aetiology   astrology   Half-n-half Clue   6. Kalligraphie   choreography   etiology, aetiology   seismology   calligraphy   Half-n-half Clue   7. Topologie   topology   sociology   economics   theology   Half-n-half Clue