1. topologia   sociology   topology   etiology, aetiology   ornithology   Hint Half-n-half Clue   2. reologia   accountancy   telepathy   rheology   topology   Half-n-half Clue   3. coreografia   choreography   astrology   telepathy   accountancy   Half-n-half Clue   4. radiologia   economics   accountancy   radiology   anthropology   Half-n-half Clue   5. eziologia   accountancy   anthropology   theology   etiology, aetiology   Half-n-half Clue   6. aeronautica   rheology   aeronautics   calligraphy   sociology   Half-n-half Clue   7. telepatia   economics   telepathy   cosmetology   rheology   Half-n-half Clue