Terpenes are the aromatic compounds that give cannabis, and a great many other plants, their smell and taste. They are what you are noticing when one cart tastes like citrus and another like pine. How they got into the cart is the interesting part.
Preserved, or added back
In a live extract the terpenes were never removed. They came off the plant with everything else and survived because the material was frozen at harvest instead of dried.
In a distillate cart they were stripped by the process and reintroduced afterwards. That reintroduction is where the two sources diverge.
Cannabis-derived versus botanical
Cannabis-derived terpenes (often shortened to CDT) are extracted from cannabis itself, so the profile is one the plant actually produces.
Botanical terpenes are sourced from other plants entirely. The individual molecules are frequently identical, since limonene is limonene wherever it comes from, but the blend is assembled rather than inherited.
Planet 13, which produces Leaf & Vine, uses cannabis-derived terpenes rather than botanical or foreign ones in its concentrates and vapes. That is a producer-level fact about how the material is made, and it is the reason the flavor on a given product tracks the plant rather than a recipe.
Why a flavor name tells you very little
A fruit name on a cart describes the intended taste, not the origin of it, and not the extraction method. Two carts with the same flavor name can be a live extract and a re-flavored distillate. Read the extract type and the terpene source; the flavor name is marketing, in the ordinary sense that it is there to describe an experience rather than a process.