ZD: “In general words do change meanings over the years and sometime the same words could mean 2 different things to 2 different people”
At least. Most of these labels have a lot more than 2 meanings, which is one of the main problems with labels (that’s a whole speech that I don’t have time for now – LF is saying, “thank you” But basically, they tend to lead to Sinas Chinam, mainly due to the fact that they have more than one meaning).
That is why there isn’t necessarily one right way to define any of the terms, and most of the definitions being used can probably technically be considered correct (as well as incorrect).
However, there usually is one (or maybe two) definition that is better to use than others. For example, there are reasons why I use the definition of Chareidi that I use. However, it would take a long time to explain why. Maybe I will do so some other time.
Suffice it to say that the best definition is the one that leads to the most Ahavas Yisrael and Emes. And that is the primary basis by which I choose my definitions.