1. calligraphie   calligraphy   entomology   choreography   aeronautics   Hint Half-n-half Clue   2. ornithologie   telepathy   ornithology   anthropology   aeronautics   Half-n-half Clue   3. radiologie   radiology   cosmetology   archeology, archaeology   sociology   Half-n-half Clue   4. anthropologie   rheology   ornithology   economics   anthropology   Half-n-half Clue   5. cosmétologie   accountancy   topology   cosmetology   telegraphy   Half-n-half Clue   6. rhéologie   entomology   rheology   etiology, aetiology   choreography   Half-n-half Clue   7. sismologie   seismology   choreography   theology   sociology   Half-n-half Clue