How do you identify warp and weft yarn?

Warp yarns run lengthwise on a loom and are typically stronger and more tightly woven, as they need to withstand tension during the weaving process. Weft yarns, on the other hand, are woven crosswise and are inserted between the warp threads, creating the fabric's width. To identify them, observe the fabric's structure: the longitudinal threads are warp, while the horizontal threads are weft. Additionally, the warp often has a more uniform appearance due to its tension, whereas the weft can vary more in texture and thickness.