Some languages use a wholly different way of making consonants: clicks

Southern African languages like Xhosa and Zulu, and especially the Khoisan language family, use click consonants as ordinary speech sounds, produced by trapping air with the tongue and releasing it sharply rather than pushing air from the lungs. Phoneticians classify clicks as a distinct airstream mechanism found in only a small cluster of the world's languages, almost all concentrated in one region.

— Peter Ladefoged, Vowels and Consonants — Blackwell, 2001
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