1. formal discourse or essay.   efficacy   dissertation   eccentricity   conifer   Hint Half-n-half Clue   2. state of being motionless.   cistern   chassis   immobility   apothecary   Half-n-half Clue   3. chemistry of changing baser metals into gold.   consistency   efficacy   alchemy   catalyst   Half-n-half Clue   4. botanical garden where trees are studied and exhibited.   apothecary   fusion   centrifuge   arboretum   Half-n-half Clue   5. application that helps soothe or soften.   congruence   awl   fauna   emollient   Half-n-half Clue   6. ability of system to maintain stability.   homeostasis   corollary   aphasia   decomposition   Half-n-half Clue   7. point in orbit farthest from earth or climax.   catalyst   anemia   apogee   homeostasis   Half-n-half Clue