äänneharmoniaa
Äänneharmoniaa, often translated as vowel harmony, is a phonological process found in many languages where vowels within a word assimilate to each other in terms of certain phonetic features. Typically, this assimilation involves backness (front vs. back vowels) and roundedness (rounded vs. unrounded vowels). For example, in Turkish, a language well-known for its vowel harmony, suffixes change their vowel to match the vowel in the root word. If the root word has front vowels like 'e', 'i', 'ö', 'ü', the suffixes will also use front vowels. If the root has back vowels like 'a', 'ı', 'o', 'u', the suffixes will use back vowels.
The specific rules and the features that undergo harmony vary greatly between languages. Some languages have