Did you know that the words glue and gluten are related to each other, and to the word clay?
Glue [ɡluː] is:
- A hard gelatin made by boiling bones and hides, used in solution as an adhesive; or any sticky adhesive substance.
- Anything that binds two things or people together.
- A viscid secretion on the surface of certain plants.
It comes from Middle English glew [ɡliu̯] (glue, birdlime, tar, resin), from Old French glu (glue, birdlime), from Late Latin glūs, from Latin glūten (glue), from Proto-Italic *gloiten, from Proto-Indo-European *glóh₁ytn̥, from *gleyH- (to smear, to stick, glue, putty) [source].
Gluten [ˈɡluːtən / ˈɡluːtn̩] is:
- The major protein in cereal grains, especially wheat; responsible for the elasticity in dough and the structure in baked bread.
It comes from Middle French gluten, from Latin glūten (glue), etc. [source].
Clay [kleɪ] is:
- A mineral substance made up of small crystals of silica and alumina, that is ductile when moist; the material of pre-fired ceramics.
It comes from Middle English cley, from Old English clǣġ (clay), from Proto-West Germanic *klaij (clay), from Proto-Germanic *klajjaz (clay), from Proto-Indo-European *gloy-(y)ó-s, from *gleyH- (to smear, to stick, glue, putty) [source].
So they all come from the same PIE root. Other words from that root include glynu (to stick, adhere, settle) in Welsh, klína (to smear) in Icelandic, glina (clay, loam) in Polish, liiv (sand) in Estonian, klei (clay) in Dutch [source].