Ask the Bulgarians...
At any rate, what do you mean compare against, compare which with which?
The Macedonian? With the Thracian?
The Macedonian is a certified Greek tongue, while there is still debate on which Greek dialect was predominant on it.
Was it the Doric element? Was it the North-Western Greek or was it the Ionic, predominant on the Macedonian speech.
To understand better ill give you an example the Doric words are identical to the Ionic, with the major exception being the A sound in Doric (a
pproximately) turns into an I(sound) in Ionic, "i" as in e
The famous Spartan motto: I TA
N i EPI TA
S = "With the shield or on it", becomes in Ionic(Athenian, Ephesian and so on) I TI
N I EPI TI
S, the Macedonians interchanged from one to the other style, and hence the debate, on which style was predominant, just like the Modern Greeks who use both styles, the Standard Greek uses the Ionic style with "i", that is the standard learning form, while the surviving Doric dialect in Sparta uses still the Doric "a", slung speakers sometimes prefer the "a" in some areas.
As you realize the debate that exists in regards to the Macedonian language, is not whether it was Greek, but whether which one of the Greek dialects was predominant on it.
The Macedonians who sprung from the Doric genealogical family, like the Spartans had more "A" sounds in their dictionary, later with the Ionic colonies in proximity their speech turned into a more Ionic version..the "a" becoming "i", while at the same time they had grammar rules and syntax of the North-Western Greek, so scholars are discussing, still on which Greek dialect was predominant in Macedonian speech prior to the Common standardization, when all these minor differences eclipsed and all Greeks started using a standard version for all, the Standard Greek was promulgated by Alexander himself, and this is the same lingua that the Modern Greek nation uses, and the same as the language, Byzantion had in all forms of language usage (official, social, educational, rural, etcetera)
From Greek accounts, see Hesychios Lexicon, we know that approximately 17-20 words of Thracian origin were used by the Macedonians.
The Thracian is not a Greek tongue, the Thracians used Greek Letters but their language was not intelligible to a Greek.
Meaning, Macedonians like the rest of Greeks did not understand the Thracians, except from these 17-20 words which they had adopted, like the Southern Greeks(Spartans, Achaians) had adopted words from the Levant due to the Phoenicians colonies in the Pelloponesse(Elafonisos and Kythera), the Ionic Greeks in Asia Minor from Persian and the Graeci In Magna Graecia, from the Latin, the exchange ofc especially when dealing with Linguocentrists as the Greeks, works both ways. The Hellenic element in the worlds dictionaries today is the most obvious testament on this.
EN EL ED EM ON
...take your common sense with you, and leave your prejudices behind...