Quechuan languages
Consonants

Gemination of the tap /ɾ/ results in a trill.

About 30% of the modern Quechua vocabulary is borrowed from Spanish, and some Spanish sounds (such as /f/, /b/, /d/, /ɡ/) may have become phonemic even among monolingual Quechua speakers.

Voicing is not phonemic in Cusco Quechua. Cusco Quechua, North Bolivian Quechua, and South Bolivian Quechua are the only varieties to have glottalized consonants. They, along with certain kinds of Ecuadorian Kichwa, are the only varieties which have aspirated consonants. Because reflexes of a given Proto-Quechua word may have different stops in neighboring dialects (Proto-Quechua *čaki 'foot' becomes č'aki and Proto-Quechua *čaka 'bridge' becomes čaka), they are thought to be innovations in Quechua from Aymara, borrowed independently after branching off from Proto-Quechua.
combination:two_responses, punctuation:no_comma