ச , prefix denoting I. intensity (as in சவிஸ்தாரம்); 2. addition (as in சமூலம், with the root), சக.
Miron Winslow - A Comprehensive Tamil and English Dictionary
ங
ng
A syllabic letter. 2. s. the mark of a marcal containing eight measures, குறுணிக்குறி. ஙப்போல்வளை. Build the entrance [of the fort.] like the letter, ங. (Avv.)
