bard / barred 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. 👇
bard: (noun) a lyric poet. (noun) an ornamental caparison for a horse.
barred: (verb) prevent from entering; keep out. (verb) secure with, or as if with, bars. (adjective) marked with stripes or bands.
bard: b·AA·r·d
barred: b·AA·r·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)