While the definition of sublimation is simple, itthere is often confusedconfusion as to what counts as a sublimation.
=== False correspondence with vaporization ===
While [[vaporizationVaporization]] (from liquid to gas) is divided into two types;: vaporization on the surface of the liquid is called [[evaporation]];, and vaporization at the boiling point with formation of bubbles in the interior of the liquid is called [[boiling]],. However there is ''no'' such distinction for the solid-to-gas transition., Solid-to-gas transitionwhich is always called sublimation in both corresponding cases.
==== Potential distinction ====
For clarification, a distinction between the two corresponding cases is needed. With reference to a [[phase diagram]], the sublimation that occurs left of the solid-gas boundary, the triple point or the solid-liquid boundary (corresponding to evaporation in vaporization) may be called ''gradual sublimation''; and the substance ''sublimesublimes gradually'', regardless of rate. The sublimation that occurs at the solid-gas boundary (critical sublimation point) (corresponding to boiling in vaporization) may be called ''rapid sublimation'', and the substance ''sublimesublimes rapidly''. Note that both the words "gradual" and "rapid" have acquired special meanings in such context and no longer describesdescribe the rate of sublimation.<!-- This distinction is used only on this page and nowhere else, to minimize confusion. If there is a better distinction, change it along with the examples. If this violates the policy of Wikipedia, please delete this paragraph and nothing else, and if possible, also provide a better solution. -->
