| − | A sticky, liquid substance that usually hardens when exposed to air.<ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc.
| + | '''Resin''' is a sticky, liquid substance that usually hardens when exposed to air. <ref>Wile, Dr. Jay L. ''Exploring Creation With General Science''. Anderson: Apologia Educational Ministries, Inc. 2000</ref> Hardened resin is used to moisten and sharpen bow hairs for string instruments (i.e. [[viola]], [[violin]], [[cello]], [[double bass]], [[viola da gamba]]). |