One of the writing systems used for the Japanese
language, kanji, is
_logographic_ [...]
In addition, there are 2 additional scripts, both
ultimately derived
from simplified ways of writing kanji, called hiragana and katakana.
There's also roumaji, which (as you presumably know but as much of the
list likely does not) is the same syllabary as the kana, but
represented with Latin letters - usually but not always digraphs. For
example, "hiragana" or "tsunami" (the latter having been imported
into
English). This occasionally produces substantial changes; for example,
"reiki" is a perfectly good roumaji spelling, but it leads English
speakers to turn the "ei" into a "-ay-" diphthong, which is a
substantial change in sound. (The word I've been spelling "roumaji" is
another example; I've also seen it rendered "romaji" and
"roomaji".
Each is arguably inaccurate, though of course in different ways.)
The Japanese *language* is based on vocalizations
produced by the
human throat and mouth, [...]
...and many of the sounds the human vocal tract can make are not used
(for example, the sounds English spells "th", which occurs in Japanese
only when quoting words from other languages); many others are
conflated (for example, the initial vowel of English "acid" and the
first vowel in English "start" will generally be taken as ignorable
variations on the same sound).
In this Japanese is no different from any other natural language.
English, for example, does not include the clicks that occur in some
African languages, or, except in loanwords - where it tends to turn
into a "k" sound - the guttural that Arabic, Russian, and German have
(German typically spells it "ch", Russian spells it with a letter than
looks rather like a Latin "X", and I don't know the Arabic alphabet
enough to say anything about how it's spelled there); and English
pretty much ignores the distinction between the vowels in French "rue"
and "roue", leading an untrained English ear to, generally, hear them
as the same vowel.
I'm sure analogous remarks are true of every other natural language,
though of course the details will differ widely.
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