What is pumice primarily recognized as?

Pumice is primarily recognized as a type of igneous rock that is formed from volcanic activity. Its distinctive feature is that it contains numerous air bubbles, which are formed during the lava's rapid cooling and depressurization. This lightweight and porous nature allows pumice to be used in a variety of applications, particularly in construction and landscaping.

Due to its abrasive properties, pumice can also serve as an effective material for cleaning and polishing surfaces, but its classification as an igneous rock with air bubbles is the most defining characteristic. This essential property differentiates pumice from other materials such as mortar, limestone, or decorative methods, which do not encapsulate these unique features.