Resin
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A resin is a highly viscous liquid or solid that can be converted into a polymer. Resins may be biological or synthetic in origin but are typically harvested from plants. Resins are mixtures of organi
Insect trapped in resin
Cedar of Lebanon cone showing flecks of resin as used in the mummification of Egyptian Pharaohs
Extremely viscous resin extruding from the trunk of a mature Araucaria columnaris
The material dripping from an almond tree looks confusingly like resin, but actually is a gum or mucilage, and chemically very different.
Terpene
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Terpenes are a large and diverse class of natural products with the general formula n, where n ≥ 2. They serve as crucial biosynthetic building blocks in many organisms, particularly plants. Comprisin
Many terpenes are derived commercially from conifer resins, such as those made by this pine.
Second- or third-instar caterpillars of Genus Papilio butterflies, like this Papilio glaucus, emit terpenes from their osmeterium.