Design language refers to a set of visual and conceptual elements that guide the creation of products, interfaces, and experiences. It includes colors, shapes, typography, and patterns that work together to convey a brand's identity and values. A consistent design language helps users understand and navigate a product more intuitively. By establishing a cohesive design language, companies like Apple and Google create recognizable and user-friendly experiences across their platforms. This approach not only enhances usability but also strengthens brand recognition, making it easier for users to connect with the brand's overall message and aesthetic.