Cellulose consists of fibrils with crystalline and amorphous regions. Thermal conductivity of amorphous materials is lower than that of crystalline metal. Textile fibers are a mixture of crystalline and amorphous substances. Boron is known in several crystalline and amorphous forms. Faujasite silica is another form of crystalline silica. Tellurium has two allotropes, crystalline and amorphous. The wet process is suitable for both crystalline and amorphous polymers. Certain places became less crystalline and more amorphous. Pure capsaicin is a hydrophobic, colorless, highly pungent, crystalline to waxy solid compound. Silicosis is a form of occupational lung disease caused by inhalation of crystalline silica dust. Silicon carbide exists in about 250 crystalline forms. This anisotropic liquid is known as a liquid crystalline or mesomorphous state. Glycine is a colorless, sweet-tasting crystalline solid. The molecular structures of gaseous and crystalline are significantly different. It is a white hygroscopic crystalline material.