tacked / tact 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. 👇
tacked: (verb) fasten with tacks. (verb) turn into the wind.
tact: (noun) consideration in dealing with others and avoiding giving offense.
tacked: t·AE·k·t
tact: t·AE·k·t
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)