Crochet is a process of creating textiles by
using a crochet hook to interlock loops of yarn thread, or strands of
other materials.The name is derived from the French term crochet, meaning
'hook'. Hooks can be made from a variety of materials, such as metal,
wood, bamboo, bone or plastic.
The key difference between crochet and knitting, beyond the implements used for their production, is that each stitch in
crochet is completed before the next one is begun, while knitting keeps
many stitches open at a time. Some variant forms of crochet, such as
Tunisian crochet and broomstick lace, do keep multiple crochet stitches
open at a time.
Learn more about the history of crochet here