1. astrologia   topology   archeology, archaeology   theology   astrology   Hint Half-n-half Clue   2. sociologia   sociology   economics   rheology   aeronautics   Half-n-half Clue   3. reologia   rheology   sociology   astrology   archeology, archaeology   Half-n-half Clue   4. caligrafia   seismology   calligraphy   aeronautics   radiology   Half-n-half Clue   5. economia   economics   telepathy   accountancy   anthropology   Half-n-half Clue   6. sismologia   seismology   archeology, archaeology   rheology   astrology   Half-n-half Clue   7. etiologia   telegraphy   astrology   etiology, aetiology   seismology   Half-n-half Clue