1. contabilidad   accountancy   etiology, aetiology   choreography   economics   Hint Half-n-half Clue   2. sociología   sociology   archeology, archaeology   rheology   astrology   Half-n-half Clue   3. etiología   telepathy   etiology, aetiology   topology   entomology   Half-n-half Clue   4. coreografía   telegraphy   rheology   choreography   accountancy   Half-n-half Clue   5. aeronáutica   ornithology   topology   astrology   aeronautics   Half-n-half Clue   6. telegrafía   accountancy   telegraphy   archeology, archaeology   sociology   Half-n-half Clue   7. arqueología   theology   topology   telepathy   archeology, archaeology   Half-n-half Clue