Bread flour typically refers to refined wheat flours that have been enriched and may or may not have been bleached. Bread flour is higher in gluten than all-purpose flours, making it suitable for applications that require more structure and elasticity in the dough.
See: Wheat, Wheat flour enrichment, Wheat flour bleaching, Gluten
Wheat flour is unsuitable for individuals sensitive to gluten.
See: Wheat, Wheat flour enrichment, Wheat flour bleaching, Gluten
Wheat flour, hard; Wheat flour, strong