1. topologie   archeology, archaeology   topology   calligraphy   rheology   Hint Half-n-half Clue   2. calligraphie   calligraphy   radiology   anthropology   aeronautics   Half-n-half Clue   3. étiologie   topology   etiology, aetiology   sociology   archeology, archaeology   Half-n-half Clue   4. entomologie   rheology   etiology, aetiology   aeronautics   entomology   Half-n-half Clue   5. comptabilité   archeology, archaeology   accountancy   rheology   entomology   Half-n-half Clue   6. radiologie   astrology   radiology   calligraphy   entomology   Half-n-half Clue   7. chorégraphie   anthropology   topology   choreography   seismology   Half-n-half Clue