OMS

Based on the provided articles, it is impossible to determine what "OMS" refers to. The articles discuss unrelated topics: the evolving use of age-related terms in the Spanish language and San Marino, a small independent republic. The first article explores how the word "joven" (young) is increasingly used, while "anciano" (elderly) is considered offensive. The second article highlights San Marino's history as the world's oldest republic and its membership in the United Nations despite its small size. Neither article mentions an organization called "OMS" or provides any context to infer its identity or activities. Therefore, no information can be provided about its newsworthiness, recent events, or current relevance.