Homonym: base layer (Foundation)
A "base layer" refers to the foundational layer of clothing worn next to the skin. Its primary purpose is to wick moisture away from the body, keeping you dry and comfortable during various activities. Base layers are typically made from materials like merino wool, synthetic fabrics, or cotton, each offering different benefits depending on the climate and activity level.
In the context of technology, a "base layer" can also refer to the underlying framework of a system, such as a blockchain. This foundational layer supports all other applications and functionalities built on top of it, ensuring stability and security. Just like in clothing, a strong base layer is essential for overall performance.