I'm just interested in knowing if there is any non-arbitrary basis for using prefixes "mono" or "uni" when words are initially being coined. As far as I can tell, they mean the same thing as a prefix. For example, why use "monochrome" instead of "unichrome"?
In a similar vein, what about other words, with prefixes like "bi", "di" or "duo"?
To be more specific, I suppose I wondered if there was any inherit connection between the prefix and its root word; like maybe if the root word is from Latin, the Latin prefix should be used, or something.