The lexico-semantic analysis of the Ivorian motto "Union, Discipline, Work" highlights two terms: lexicon and semantics. The lexicon of a language is its set of words. These form a whole, a kind of semantic system, which evolves over time. The relationships between words, form and, above all, meaning are highly diverse. The size of a lexicon, more or less variable, depends on the fields of knowledge or techniques it is used to express. The extent of the lexicon known or used by each person also varies, depending on their background, but also on their stories and life situations. Semantics is the branch of linguistics that studies the signified. It covers a whole range of processes that contribute to the construction of meaning in communication, and in language in particular.