sewed / sowed 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. 👇
sewed: (verb) fasten by sewing; do needlework. (verb) create (clothes) with cloth. (adjective) fastened with stitches.
sowed: (verb) place (seeds) in or on the ground for future growth. (verb) introduce into an environment.
sewed: s·OW·d
sowed: s·AW·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)