Agreed. However, are your lexicographer standards such words can only have one sense, their original sense?
I've tried to get folks like you to go study your Bible history more to discover what God's Word actually teaches about this matter.
An example...
Rom 2:28-29
28 For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh:
29 But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
KJV
The word "
Jew" in the above per the Greek is NT:2453
Ioudaios which means a 'Judean' according to GEOGRAPHICAL REGION. How's that? It comes from the name of the tribe of Judah. So how's that make one a Jew? Apostle Paul said he was born of the tribe of Benjamin, which is not the tribe of Judah, so why did he call himself a Jew?
This can only be confusing to those who have NOT studied their Old Testament history.
1. Starting in 1 Kings 11, God split old Israel in Solomon's days because of Solomon allowing his many wives to bring in idol worship among the children of Israel.
2. This split created 2 separate kingdoms involving the children of Israel. The tribes of Judah and Benjamin, and eventually Levi, and a small remnant out of the northern tribes, made up the southern kingdom called the "house of Judah", their capital at Jerusalem-Judea, and under king Rehoboam of the house of David. Other names for this southern kingdom were just "Jerusalem", or just "Judah".
Then the northern kingdom was made up of the ten tribes of Israel, and were called the "house of Israel". Other names were "Israel", "Ephraim", "Samaria", etc.
3. God gave ten tribes to Jeroboam of the tribe of Ephraim, and made him "king of Israel". This northern kingdom had NOTHING to do with the southern "house of Judah" kingdom, or Jews. King Jeroboam setup two calf idols in the north to keep the ten tribes from going south to join with the "house of Judah" (1 Kings 12). That false worship continued among the ten tribes through several of their kings, until God finally did something about, and removed the ten tribes out of the holy land by the kings of Assyria (2 Kings 17).
4. The Jews of the "house of Judah" kingdom in the south at Jerusalem-Judea were the only Israelites left in the promise land after God had scattered the ten northern tribes of Israel. When the Jews of the southern kingdom, the "house of Judah", went captive to Babylon, the ten tribes were not present in the land, but were already scattered to Assyria and the lands of the Medes. The Jewish historian Josephus said in his day (circa 100 A.D.) that the ten tribes were still scattered beyond... Euphrates and were a great number of people. Thus God separated the two groups of Israelites. The Jews represented ONLY those of the southern kingdom of Judah, the "house of Judah", as it still... is to this day.
5. The ten tribes though are LOST to the Jews and to the world. God caused them to lose their identity as part of the old kingdom of Israel. They became like Gentiles, scattered among Gentiles. God showed this is what He would to to them in the Book of Hosea.
Because the Jews of the "house of Judah" were the only Israelites left in the promise land, they began to be known and call themselves as Israel. And the seed of the children of Israel they represented as Jews began to be used for the righteous seed of promise, i.e., God's chosen. But NOT ALL OF THEM WERE OF THE SEED. Foreigners per the history about Judah, starting creeping in among the "house of Judah" earlier in their history, and would eventually take over control of Moses' seat of the Law. That is where the "Jew's religion", Judaism, came into existence, by those crept in unawares among the real seed of the "house of Judah".
So when Apostle Paul used the word Ioudaios to represent a true Jews in the SPIRITUAL SENSE, he was pointing to those Judeans of the "house of Judah" that were of the Seed of the Woman, i.e., true Israelites by blood. And Paul was using the term as an example of an Israelite of the Seed in good standing with The Father and The Son Jesus Christ.