  If we switch instead to a phonemic analysis of words, as being more fundamental, similar problems arise. Not all tokens of a word are composed of the same phonemes, because some tokens are inscriptions. But even ignoring inscriptions, the example of the two ‘down’’s shows that neither can we identify a word with a sequence of phonemes. This particular difficulty might be avoided if we identify a word with a phonemic analysis paired with a sense. But this is too strong; we saw earlier that the noun ‘color’ has eighteen senses. Moreover, ‘schedule’ has more than one phonemic analysis. A phoneme itself is a type with tokens, and so we'd also need an account of what a phoneme is, and what its tokens have in common (if anything). Saying what a phoneme is promises to be at least as hard as saying what a letter is. Phonology, the study of phonemes, is distinct from phonetics, the scientific study of speech production. Phonetics is concerned with the physical properties of sounds produced and is not language relative. Phonemes, on the other hand, are language relative: two phonetically distinct speech tokens may be classified as tokens of the same phoneme relative to one language, or as tokens of different phonemes relative to another language. Phonemes are theoretical entities, and abstract ones at that: they are sometimes said to be sets of features. The bottom line is that the phonological word is not the lexicographical one either.