1. substance formed by decay of organic material.   humus   efficacy   anemia   decomposition   Hint Half-n-half Clue   2. attrition by rubbing or disagreement.   discrepancy   astigmatism   correlation   friction   Half-n-half Clue   3. defect in eye or lens preventing proper focusing.   cistern   consistency   homeostasis   astigmatism   Half-n-half Clue   4. floating sheet of ice.   clavicle   humus   homeostasis   floe   Half-n-half Clue   5. druggist or chemist.   imbalance   cartographer   apothecary   homeostasis   Half-n-half Clue   6. post-mortem or examination of dead body.   discrepancy   anemia   awl   autopsy   Half-n-half Clue   7. cutting for analysis or examination.   floe   dissection   efficacy   astigmatism   Half-n-half Clue