Both AVL Trees and Red-Black Trees keep themselves balanced so that searching stays fast. The difference is in how strict they are — AVL Trees stay more tightly balanced, which makes lookups slightly faster but requires more work when adding or removing values. Red-Black Trees are a bit more relaxed, so insertions and deletions are quicker. Try inserting the same values into both and see how each one balances itself. For a deeper look at how and why they differ, check out this article.
AVL enforces strict height balance (height difference between subtrees ≤ 1). Red-Black enforces color rules ensuring the longest path from root to leaf is no more than twice the length of the shortest path.
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