1.
clay
A natural, fine-grained material that becomes pliable when wet and hard when fired. Used for pottery, sculpture, and crafts.
粘土 refers to a fine-grained, malleable earth material that becomes soft and workable when wet and hardens when dried or fired. It is used in pottery, sculpture, and children's crafts, and also appears in geological and agricultural contexts to describe soil composition.
Etymology
A compound of 粘 (sticky) + 土 (earth, soil).