1. failure to tally or lack of consistency.   congruence   discrepancy   correlation   atrophy   Hint Half-n-half Clue   2. compulsion or repression.   atavism   cartographer   atrophy   constraint   Half-n-half Clue   3. maker of maps.   eccentricity   fulcrum   cartographer   aureole   Half-n-half Clue   4. agent to speed up chemical reaction without it changing.   catalyst   emollient   chameleon   extrapolation   Half-n-half Clue   5. exhalation affecting smell.   effluvium   asteroid   analogy   conduit   Half-n-half Clue   6. collection of stars or brilliant personalities.   cipher   chisel   aureole   galaxy   Half-n-half Clue   7. point on which lever is supported.   assumption   gyroscope   fulcrum   fauna   Half-n-half Clue