Traditionally five levels are recognised: phonetics, phonology, morphology, syntax, semantics.
Other languages, such as Chinese or Vietnamese, are very clearly analytic and approach a relationship of one word per morpheme. Each feature is a quality or characteristic of the natural class, such as voice or manner.
An example would be the group of obstruents stops and fricatives as only these are affected by final devoicing in German. In an analytic language like English prepositions play a central role in the grammar.
The term is used in German to refer to grammatical features as well. The lexical meaning of table is 'a piece of furniture with a horizontal surface designed to be sat at'.
Equally all sentences consist of structures from a small set with different words occupying different points in the structures allowing for virtually unlimited variety. Two major points in this connection should be noted: 1 'dialect' does not refer to the social or temporal aspect of language and 2 the term 'dialect' makes no reference to the standard variety of a language.
It contrasts with the more recent view that change can proceed word by word through the lexicon see Lexical Diffusion. A phoneme can have different allophones, frequently depending on position in the word or on a preceding vowel, e.