mainland dialects (of Japanese, as opposed to the Ryukyu languages)
sociolect; social dialect
dialect continuum; dialect chain
Okinawan (language); Okinawan dialect
new dialect; new regional dialect
dialectal kanji; kanji only used in a specific region
center versus periphery theory
center versus periphery theory
nayashi dialect (spoken in Nagano, Yamanashi and Shizuoka prefectures)
nayashi dialect (spoken in Nagano, Yamanashi and Shizuoka prefectures)
number of dialectal versions of a word
Hachijō dialects; Hachijō language