1. topologie   seismology   accountancy   radiology   topology   Hint Half-n-half Clue   2. entomologie   entomology   seismology   ornithology   cosmetology   Half-n-half Clue   3. calligraphie   astrology   cosmetology   topology   calligraphy   Half-n-half Clue   4. télépathie   cosmetology   astrology   seismology   telepathy   Half-n-half Clue   5. chorégraphie   choreography   rheology   economics   telepathy   Half-n-half Clue   6. radiologie   radiology   astrology   etiology, aetiology   seismology   Half-n-half Clue   7. archéologie   telegraphy   archeology, archaeology   rheology   cosmetology   Half-n-half Clue