bread / bred are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
bread: (noun) food made from dough of flour or meal and usually raised with yeast or baking powder and then baked. (verb) cover with bread crumbs.
bred: (verb) copulate with a female, used especially of horses. (verb) cause to procreate (animals). (verb) have young (animals) or reproduce (organisms).
bread: b·r·EH·d
bred: b·r·EH·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)