Persian phonology
The phonology of the Persian language varies between regional dialects and standard varieties. Persian is a pluricentric language and countries that have Persian as an official language have separate standard varieties, namely: Standard Dari (Afghanistan), Standard Iranian Persian (Iran) and Standard Tajik (Tajikistan). The most significant differences between standard varieties of Persian are their vowel systems. Standard varieties of Persian have anywhere from 6 to 8 vowel distinctions, and similar vowels may be pronounced differently between standards. However, there are not many notable differences when comparing consonants, as all standard varieties have a similar number of consonant sounds. Though, colloquial varieties generally have more differences than their standard counterparts. Most dialects feature contrastive stress and syllable-final consonant clusters. Linguists tend to focus on Iranian Persian, so this article may contain less adequate information regarding other varieties.