The author might not be aware of it but there have been extensive discussions and work about such terms in the philosophy of language in the past two decades (and earlier). I've heard whole lectures about whether fruit salad really is a salad, and the sandwich examples, too.

In my opinion, geometric meaning theories capture the associated problems fairly well, for example Conceptual Spaces. In linguistics, prototype theory and related approaches have dealt with them since the 1970s. That is not to say that the problems are solved but in my opinion many problems come from an artificial focus on logical concept decompositions and the fact that language doesn't work that way.

My 2 cents as a former philosopher who worked in this area.