The industry-standard wheel from the Specialty Coffee Association and World Coffee Research — the most exhaustive vocabulary there is for describing what's in the cup.
A three layered system
1
Family(Center ring) — The broad category — Fruity, Nutty/Cocoa, Roasted.
2
Note(Middle ring) — Narrows the family down — Berry, Citrus Fruit, Cocoa.
3
Flavor(Outer ring) — The specific taste — Blueberry, Lemon, Dark Chocolate.