Palatals.
Sounds produced with the tongue and the palate are
called palatals (or alveopalatals).
Voiceless palatal sounds are (ʧ) ( ʃ) also the voiced
palatal sounds are (ʤ) (Ʒ)
Velars.
Sounds produced with the back of the tongue against the
velum are called velars. the voiceless velar sound is (k)
and the voiced velar sounds are (g), (ɳ).