Background: Some of the Dravidian languages, such as Telugu, Tamil, Malayalam, and Kannada, have a distinction between voiced and voiceless, aspirated and unaspirated only in loanwords from Indo-Aryan languages. In native Dravidian words, there is no distinction between these categories and stops are underspecified for voicing and aspiration.
Question: What has no distinction between the categories  of voiced, voiceless, aspirated and unaspirated?
Answer:<extra_id_0>.
<extra_id_0> native Dravidian words<extra_id_1>