Hierarchy classification:

1. top of the aat hierarchies
2. Associated Concepts Facet
3. Associated Concepts (hierarchy name)
4. language-related concepts

Anotations

Scope note:

In linguistics, phonetically distinct variants of a phoneme, usually distinguished from other variants by its position in the word or by its phonetic environment. Speakers of a language often have difficulty in hearing the phonetic differences between allophones of the same phoneme, because these differences do not serve to distinguish one word from another. In English, examples would be the "t" sounds in the words "hit," "tin," and "little."