Palatalization has varying
phonological significance in different languages. It is
allophonic in English, but
phonemic in others. In English, consonants are palatalized when they occur before front vowels or the palatal approximant (and in a few other cases), but no words are distinguished by palatalization (
complementary distribution), whereas in some of the other languages, the difference between palatalized consonants and plain unpalatalized consonants distinguishes between words, appearing in a
contrastive distribution (where one of the two versions, palatalized or not, appears in the same environment as the other).
Allophonic palatalization In some languages, like Hindustani, palatalization is
allophonic. Some
phonemes have palatalized allophones in certain contexts, typically before
front vowels and unpalatalized allophones elsewhere. Because it is allophonic, palatalization of this type does not
distinguish words and often goes unnoticed by native speakers. Phonetic palatalization occurs in American English. Stops are palatalized before the front vowel and not palatalized in other cases.
Phonemic palatalization In some languages, palatalization is a
distinctive feature that distinguishes two consonant
phonemes. This feature occurs in
Russian,
Irish, and
Scottish Gaelic, among others. Phonemic palatalization may be contrasted with either plain or
velarized articulation. In many of the
Slavic languages, and some of the
Baltic and
Finnic languages, palatalized consonants contrast with plain consonants, but in
Irish they contrast with velarized consonants. • Russian "nose" (unpalatalized ) : [nʲɵs] "(he) carried" (palatalized ) • Irish "cow" (velarized
b) : "alive" (palatalized
b) Some palatalized phonemes undergo change beyond phonetic palatalization. For instance, the unpalatalized sibilant (Irish , Scottish ) has a palatalized counterpart that is actually
postalveolar , not phonetically palatalized , and the velar fricative in both languages has a palatalized counterpart that is actually palatal rather than palatalized velar . These shifts in primary
place of articulation are examples of the sound change of
palatalization.
Morphophonemic In some languages, palatalization is used as a
morpheme or part of a morpheme. In some cases, a vowel caused a consonant to become palatalized, and then this vowel was lost by
elision. Here, there appears to be a
phonemic contrast when analysis of the
deep structure shows it to be allophonic. In
Romanian, consonants are palatalized before . Palatalized consonants appear at the end of the word, and mark the plural in nouns and adjectives, and the second person singular in verbs. On the surface, it would appear then that "coin" forms a
minimal pair with . The interpretation commonly taken, however, is that an underlying morpheme palatalizes the consonant and is subsequently deleted. Palatalization may also occur as a
morphological feature. For example, although Russian makes phonemic contrasts between palatalized and unpalatalized consonants, alternations across morpheme boundaries are normal: • ('answer') vs. ('to answer') • ('[I] carry') vs. ('carries') • ('hunger') vs. ('hungry' masc.) ==Sound changes==