1. ability to produce desired effect.   atrophy   congruence   efficacy   conglomeration   Hint Half-n-half Clue   2. mutual relation.   correlation   flux   assumption   efficacy   Half-n-half Clue   3. deficiency of red blood corpuscles.   dichotomy   diminution   anemia   aperture   Half-n-half Clue   4. drug or treatment preventing infection.   friction   autopsy   antiseptic   cerebration   Half-n-half Clue   5. narrow opening or crevice.   atrophy   component   fissure   die   Half-n-half Clue   6. purging of passage of body; outlet to emotion.   chassis   eccentricity   effluvium   catharsis   Half-n-half Clue   7. balance.   chisel   equilibrium   cartographer   effervescence   Half-n-half Clue