Voiceless plosive and fricative consonants occur in more languages than voiced ones, but voiced types are nonetheless relatively common. How frequent it is for a contrast between voiced and voiceless plosives and fricatives to occur in languages and how such contrasts are distributed will be the focus of this chapter.hese two classes of consonants are the plosives and fricatives. Plosives are the kinds of sounds usually associated with the letters p, t, k; b, d, g, in which air flow from the lungs is interrupted by a complete closure being made in the mouth.
Composites are made up of individual materials referred to as constituent materials. There are two main categories of constituent materials: matrix and reinforcement. At least one portion of each type is required.
Best Answer: An alloy is a homogeneous mixture (solution) of two or more metals. A composite material is often heterogeneous, and is not always of metals. Example of Composite Material: Concrete and Fiberglass. It is material composed of more than one material, they are mixed but not in a homogeneous form. Example of Alloy: Steel and Copper. It is made of more than one material also, but they are well mixed, usually metals are melted and mixed together to give an alloy.