What are labels?

[-JKP-]

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Suppose, the evil spirit is "vodka". And the operator is "o". The label would be "ovodka". If the operator means "related to", the label reads "related to vodka". It is to be understood that the object thus labeled, be that star, naked woman or a pipe (which btw I suppose to be blood vessels and various guts), is related to vodka. And it's absolutely of no surprise that a group of different and even inhomogenous objects may be related to the same object.

Then if otor means o+tor then one needs, I think, to explain the degree of similarity in spelling of tol, kol, tor and how they can have distinct meanings with such similar spellings.

Yes, that's the important question, and my best guess so far has been a nomenclator solution.

An easy way to understand this is with English/Irish o'clock. The "o" part means "of the" but that does not mean that every word with "o" at the beginning means "of the". The "o" can also be a regular letter (or something else). In other words, the context determines what the "o" represents.

It's the same with Greek. "o" at the beginning can be an article, but it can also be a regular letter "o". Context determines the meaning and there is more than one way to interpret it.