Corpus was collected on 2015 from http://dsal.uchicago.edu/dictionaries/
Same has been used along with Morphological engine at
http://vaani.neechalkaran.com/word
&
http://www.tamilvu.org/sites/default/files/tamil-computing-tools/Tamilinaiyam%20-%20Dictionary.zip
list of unique words from some blogger site
http://vaiyan.blogspot.com Creative Commons Attribution-ShareAlike 4.0 International
https://gnutamil.blogspot.com/ Creative Commons Attribution 3.0 Unported License
http://www.badriseshadri.in/ Creative Commons Attribution 2.5 India License.
https://neel48.blogspot.com/ Creative Commons Attribution-NonCommercial 4.0 International License.
http://tech.neechalkaran.com Copyleft
http://thiru-padaippugal.blogspot.com unlicenced