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