1. wirtschaftlich   topology   accountancy   seismology   economics   Hint Half-n-half Clue   2. Kalligraphie   calligraphy   aeronautics   choreography   etiology, aetiology   Half-n-half Clue   3. Archäologie   economics   accountancy   choreography   archeology, archaeology   Half-n-half Clue   4. Soziologie   sociology   telepathy   astrology   etiology, aetiology   Half-n-half Clue   5. Ätiologie   archeology, archaeology   etiology, aetiology   ornithology   topology   Half-n-half Clue   6. Astrologie   seismology   cosmetology   topology   astrology   Half-n-half Clue   7. Telegraphie   telegraphy   ornithology   theology   entomology   Half-n-half Clue