1. green coating on old bronze.   patina   parasite   vortex   quadruped   Hint Half-n-half Clue   2. stitching of parts at their edges; thread or wire.   pestle   precipitant   virus   suture   Half-n-half Clue   3. primary type used as model.   syllogism   prototype   nomenclature   pigment   Half-n-half Clue   4. marsh or soft and wet land.   quagmire   pestle   prototype   precipitant   Half-n-half Clue   5. point in moon's orbit nearest from earth.   perigee   trough   vertex   pachyderm   Half-n-half Clue   6. observed fact or occurrence subject to scientific study.   phenomenon   yield   prototype   nutrient   Half-n-half Clue   7. ring (of leaves around the stem).   yield   patina   whorl   precipitant   Half-n-half Clue