Art made from materials that are naturally occurring such as wool, silk, or cottons, or synthetic fibers like acrylic. The art is made from unwoven fibers like yarn or string.

Short answer: they're the same! Just like color and colour, the meaning is the same, and the spelling differs between culture and time period. Typically, "fibre" is used when describing the art form, and "fiber" is used when describing the noun. For our purposes, we'll use "fiber", but use whatever you feel is best.

Art made from woven fibers, like cloth and fabric.

Women is term used for gender expression, female is term used to describe the biological sex of a person. Because we want to respect everyone's expression on this site, the term "women" and "women crafters" will be used to describe people who have noted that they identify as a women - the term female will only be used when specifically discussing biology, which doesn't happen much here.

Crafters are people who take resources given to them (in this case, fibers and textiles), and create something for aesthetics, art, or use. Artists can and is used interchangeably with crafter. The term "artist" is typically used when describing someone who "makes".

Crafters, as defined above, who identify as women, as defined above.

A stitch technique, or more simply a "stitch" is the series and direction that a tool weaves fibers to create a joinery or design. This is seen in sewing, cross stitch, embroidery, crochet, knitting, and more. Most every art form that uses stitches has its own vocabulary and variety of stitches.