Some of the regional varieties of the Spanish language are quite divergent from one another, especially in pronunciation and vocabulary, and less so in grammar. While all Spanish dialects adhere to approximately the same written standard, all spoken varieties differ from the written variety, to different degrees. There are differences between European Spanish (also called Peninsular Spanish) and the Spanish of the Americas, as well as many different dialect areas both within Spain and within the Americas. Chilean and Honduran Spanish have been identified by various linguists as the most divergent varieties. Prominent differences of pronunciation among dialects of Spanish include: the maintenance or lack of distinction between the phonemes and (distinción vs. seseo and ceceo); the maintenance or loss of distinction between phonemes represented orthographically by ll and y (yeísmo); the maintenance of syllable-final vs. its weakening to (called aspiration, or more precisely debuccalization), or its loss; and the tendency, in areas of central Mexico and of the Andean highlands, to reduction (especially devoicing), or loss, of unstressed vowels, mainly when they are in contact with voiceless consonants. Among grammatical features, the most prominent variation among dialects is in the use of the second-person pronouns. In Hispanic America the only second-person plural pronoun, for both formal and informal treatment, is , while in most of Spain the informal second-person plural pronoun is with used only in the formal treatment. For the second-person singular familiar pronoun, some American dialects use (and its associated verb forms), while others use either (see voseo) or both tú and (which, together with usted, can make for a possible three-tiered distinction of formalities). There are significant differences in vocabulary among regional varieties of Spanish, particularly in the domains of food products, everyday objects, and clothes; and many American varieties show considerable lexical influence from Native American languages. Sets of variants While there is no broad consensus on how American Spanish dialects should be classified, the following scheme which takes into account phonological, grammatical, socio-historical, and language contact data provides a reasonable approximation of Latin American dialect variation: Mexican (except coastal areas) and southwestern US (including New Mexican). Central American, including southwestern Mexico. Caribbean (Cuba, Venezuela, Puerto Rico, Dominican Republic, Panama, Caribbean Colombia, Trinidad and Caribbean and Pacific Coasts of Mexico). Inland Colombia and the speech of neighboring areas of Venezuela. Pacific coast of Colombia, Ecuador, and Peru Andean regions of Ecuador, Peru, Bolivia, southwestern Colombia,