A fine end is a warp yarn of smaller diameter in the fabric, mostly a description of the defect silk warp consisting of thin places were filaments required to make up the full ply missing, generally poor reeling.
Z-Twist is a term used to describe a right-handed twisted yarn, in contrast to S-Twist.
Ply yarns; all are single-ply unless twisted with another yarn called two-ply and three-ply if three twisted. Plied yarns are used to make garment stronger.
Chino, the name came from both the trouser style worn by British Colonial troops in the 1800′s and the cotton fibre used for the fabric named twill.