Topic summary
North American languages

Extracted from the Wikipedia article Indigenous languages of the Americas.
Northern America
Due to the diversity of languages in North America, it is difficult to make generalizations for the region. Most North American languages have a relatively small number of vowels (i.e. three to five vowels). Languages of the western half of North America often have relatively large consonant inventories. The languages of the Pacific Northwest are notable for their complex phonotactics (for example, some languages have words that lack vowels entirely). The languages of the Plateau area have relatively rare pharyngeals and epiglottals (they are otherwise restricted to Afroasiatic languages and the languages of the Caucasus). Ejective consonants are also common in western North America, although they are rare elsewhere (except, again, for the Caucasus region, parts of Africa, and the Mayan family).