The primary difference lies in the ratio of cotton to polyester. CVC (Chief Value Cotton) yarn contains over 50% cotton (commonly 60/40 or 80/20), offering superior breathability, softness, and skin-friendliness, making it ideal for high-end apparel. PC (Polyester Cotton) yarn has a higher polyester content (commonly 65/35), which provides greater tensile strength, better wrinkle resistance, and lower shrinkage. Choose CVC for comfort-focused garments and PC for durable workwear or industrial textiles.