What is the name for a distributive lattice with only two elements, top and bottom?

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Is there a name for a distributive lattice with only two (nonequal) elements, 1 and 0, corresponding to top and bottom, respectively? I was thinking of calling it a trivial lattice, but a trivial lattice should probably just have one element.

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For a name, I would use the two-element chain. Grätzer uses this at least nine times in his book Lattice Theory. Foundation (Birkhäuser/Springer 2011).

Common notations are $C_2$ (used by Grätzer) and $\mathbf{2}$ (used by Stanley in Enumerative Combinatorics, vol. 1).