swa-swa is an example of a word from ?
http://www.google.com/search?q=swa-swa+linguistics&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA
I'd go into that History of English website and see if it's obvious.
Let us know what you find out.
To determine the origin or category of the word "swa-swa," we can break it down into its components. "Swa" could represent a prefix or a root word, and "swa" could be a repetition or a reduplication of the root word. However, without any further context or information, it is difficult to pinpoint the specific language or category this word belongs to.
To properly identify the language or category of the word "swa-swa," it would be helpful to provide more context or details about its usage or origin.