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Types of vowels - Coggle Diagram
Types of vowels
According to the position of the bulk of the tongue
front vowels
the fully front
the front-retracted
central vowels
back vowels
the back advanced
the fully back
According to the tongue-height
high
narrow
broad
mid
narrow
broad
low
narrow
broad
According to the stability of articulation
10 monophthongs + 2 diphthongoids
8 diphthongs
According to the type of nucleus (the stressed element of a diphthon)
back
front
central
According to the type of glide (the second element of a diphthong)
//gliding
//gliding
//gliding
According to the duration
short
long
According to the degree of muscular tension
tense(all long vowels)
lax (all short vowels)
According to the lip position
labialised(rounded)
non-labialised (unrounded)