1. ornitologia   sociology   anthropology   ornithology   theology   Hint Half-n-half Clue   2. aeronautica   aeronautics   anthropology   etiology, aetiology   telegraphy   Half-n-half Clue   3. entomologia   seismology   calligraphy   entomology   telegraphy   Half-n-half Clue   4. archeologia   archeology, archaeology   topology   sociology   rheology   Half-n-half Clue   5. telegrafia   seismology   sociology   choreography   telegraphy   Half-n-half Clue   6. antropologia   anthropology   astrology   economics   telegraphy   Half-n-half Clue   7. astrologia   rheology   astrology   telegraphy   etiology, aetiology   Half-n-half Clue