In Gita? (Austro-Asiatic) a number of different forms can be derived from a noun base, as the examples here show (data from McCarthy 1983 ):
$$\begin{array}{|c|c|}\hline \text { kiton } & \text { 'god' } \\\hline \text { kan } & \text { beng with powen equal is "kter" } \\\hline \text { kìn } & \text { beins smalke, weaker than "kion" } \\\hline \text { lutan } & \text { being other than "kiton' (eg, spints, ghosts)' }\\\hline\text { kesu } & \text { wrapper wom sugaind cold" } \\\hline \text { kasa } & \text { "ckoth equivalent is "kesu" in size andlexture" } \\\hline \text { (wisi } & \text { 'small of thin piece of dott' } \\\hline \text { bas } & \text { 'any other material useableagainst cold' } \\\hline\end{array}$$
Propose an analysis of this process. What kind of word formation rule is at work here?