1. sismologie   sociology   telegraphy   seismology   cosmetology   Hint Half-n-half Clue   2. entomologie   accountancy   entomology   radiology   topology   Half-n-half Clue   3. calligraphie   topology   astrology   radiology   calligraphy   Half-n-half Clue   4. astrologie   ornithology   astrology   seismology   calligraphy   Half-n-half Clue   5. archéologie   calligraphy   seismology   accountancy   archeology, archaeology   Half-n-half Clue   6. ornithologie   topology   ornithology   archeology, archaeology   telepathy   Half-n-half Clue   7. télépathie   telepathy   sociology   seismology   calligraphy   Half-n-half Clue