war / wore 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. 👇
war: (noun) the waging of armed conflict against an enemy. (noun) a legal state created by a declaration of war and ended by official declaration during which the international rules of war apply. (noun) an active struggle between competing entities. (noun) a concerted campaign to end something that is injurious. (verb) make or wage war.
wore: (verb) be dressed in. (verb) have on one's person. (verb) have in one's aspect; wear an expression of one's attitude or personality. (verb) deteriorate through use or stress. (verb) have or show an appearance of. (verb) last and be usable. (verb) put clothing on one's body.
war: w·AO·r
wore: w·AO·r
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)