Pulmonic-contour clicks, also called sequential linguo-pulmonic consonants, are consonants that transition from a click to an ordinary pulmonic sound, or more precisely, have an audible delay between the front and rear release of the click. All click types (alveolar ǃ, dental ǀ, lateral ǁ, palatal ǂ, retroflex 𝼊 and labial ʘ) have linguo-pulmonic variants, which occur as both stops and affricates, and are attested in four phonations: tenuis, voiced, aspirated, and murmured (breathy voiced). At least a voiceless linguo-pulmonic affricate is attested from all Khoisan languages of southern Africa (the Khoe, Tuu, and Kxʼa language families), as well as (reportedly) from the Bantu language Yeyi from the same area, but they are unattested elsewhere.
Retroflex click in the context of Nasal click
Nasal clicks are click consonants pronounced with nasal airflow. All click types (bilabial ʘ, dental ǀ, alveolar ǃ, lateral ǁ, palatal ǂ, and retroflex 𝼊) have nasal variants, and these are attested in four or five phonations: voiced, voiceless, aspirated, murmured (breathy voiced), and—in the analysis of Miller (2011)—glottalized.
View the full Wikipedia page for Nasal clickRetroflex click in the context of Ejective-contour click
Ejective-contour clicks, also called sequential linguo-glottalic consonants, are consonants that transition from a click to an ejective sound, or more precisely, have an audible delay between the front and rear release of the click. All click types (alveolar ǃ, dental ǀ, lateral ǁ, palatal ǂ, retroflex 𝼊 and labial ʘ) have linguo-glottalic variants, which occur as both stops and affricates, and may be voiced. At least a voiceless linguo-glottalic affricate is attested from all Khoisan languages of southern Africa (the Khoe, Tuu, and Kxʼa language families), as well as from the Bantu language Yeyi from the same area, but they are unattested elsewhere.
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