Which term could describe both loam soil and adobe soil due to their workability?

Loam soil and adobe soil are both characterized by their favorable workability, primarily due to their composition. Loam, a balanced mixture of sand, silt, and clay, is highly regarded in gardening and agriculture for its ability to retain moisture while also draining well, making it easy to manipulate and cultivate.

Adobe soil, on the other hand, is specifically a type of clay-rich soil that, when mixed with straw or other materials, can be molded into bricks or used in construction. The term "black soil" typically refers to dark, nutrient-rich soils that are often found in specific regions, like the Mollisols in prairie regions. While adobe can have a darker appearance due to its organic content, the term "black soil" is not a precise descriptor for both loam and adobe in terms of their workability.

The term "clay soil" describes soils that primarily consist of clay particles. While both loam and adobe soils do contain clay, loam's overall composition of sand and silt contributes significantly to its desirable workability, which is not a characteristic of clay soil alone.

Thus, the term "black soil" resonates more with the context of both loam and adobe regarding their effective workability and utility in different applications