Indica is a classification that refers to the geographic origin of a cultivar (strain) and is reserved for cannabis varieties that are typically shorter in height with wider leaves than their sativa counterparts. People tend to use these products in the evening or at night.
Hybrid varieties are combinations of both indicas and sativas, possessing characteristics from each group.
Terpenes are organic compounds, produced by a variety of plants including cannabis. They are responsible for the unique aromas and flavours of different cannabis cultivars (strains).