I've learned quite recently, that plural form from comma is commata (but commas is also correct, such as index-indices-indexes). I've learned the rule for German, and I've checked the English version too.
This is the first time I've consciously seen that word (I could came across it before, but I haven't notice). What is the usage of that 2 plural forms? Which is more recent in professional literature (for blogs/twitter&co I'd guess, 'commas')?
Should I, as non-native speaker, making many common mistakes, use such 'finesse' plural forms, or it sounds funny in such context?