• 1 · Religion and Magic
• 2 · Nature
• 3 · Human Being, Man in General
• 4 · Society, Civilization, Culture
• 5 · Abstract Ideas and Concepts
• 6 · History
• 7 · Bible
• 8 · Literature
• 9 · Classical Mythology and Ancient History

• Top
• 2 · Nature
• 25 · earth, world as celestial body
• 25G · plants; vegetation
• 25G3 · trees
• 25G3(...) · trees (with NAME)
• 25G3(OAK) · trees: oak
• 25G3(OAK)(+2) · trees: oak (+ parts of plants)

25G3(OAK)(+21) · trees: oak (+ stem, trunk)