paced / paste 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. 👇
paced: (verb) walk with slow or fast paces. (verb) go at a pace. (verb) measure (distances) by pacing. (verb) regulate or set the pace of.
paste: (noun) any mixture of a soft and malleable consistency. (noun) a hard, brilliant lead glass that is used in making artificial jewelry. (noun) an adhesive made from water and flour or starch; used on paper and paperboard. (verb) hit with the fists. (verb) cover the surface of.
paced: p·EY·s·t
paste: p·EY·s·t
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)