They are nonetheless related, if you would align the spins in the water and the (metal) bucket you would make the bucket and&#x2F;or water spin to conserve the angular momentum. [1] They are surly different but it is not some accident of history that both are called angular momentum, they are really both angular momentum.<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Einstein–de_Haas_effect" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Einstein–de_Haas_effect</a>