Is Uzziah and Azariah name of the same king?

Question

This is with reference to the two chapters :

2 Chronicles 26 Then all the people of Judah took Uzziah, who was sixteen years old, and made him king in the room of his father Amaziah.
2 He built Eloth, and restored it to Judah, after that the king slept with his fathers.
3 Sixteen years old was Uzziah when he began to reign, and he reigned fifty and two years in Jerusalem. His mother's name also was Jecoliah of Jerusalem.

and

2 Kings 15 In the twenty and seventh year of Jeroboam king of Israel began Azariah son of Amaziah king of Judah to reign.
2 Sixteen years old was he when he began to reign, and he reigned two and fifty years in Jerusalem. And his mother's name was Jecholiah of Jerusalem.

It's pretty clear that both the chapters are referring to the same person? Then why are the names mentioned differently?

Answer 1

Rashi asks this question, and he argues that because they are obviously the same person, there must have been a name change:

In the twenty-seventh year of Jeroboam: Is it possible to say so? Did not Uzziah and Jeroboam reign simultaneously, as I explained shortly before this (14:22)? What, then, is the meaning of the verse, “In the twenty seventh year of Jeroboam… Azariah… became king” ? That from that year, he reigned a plagued kingship. We learn that he was stricken with “zaraath” in the twenty-seventh year of his reign.

Rashi is referring to tza'arat ("leprosy", but it's not really that), with which the king is afflicted a few verses later in Kings:

וַיְנַגַּע יְהוָה אֶת-הַמֶּלֶךְ, וַיְהִי מְצֹרָע עַד-יוֹם מֹתוֹ, וַיֵּשֶׁב, בְּבֵית הַחָפְשִׁית; וְיוֹתָם בֶּן-הַמֶּלֶךְ עַל-הַבַּיִת, שֹׁפֵט אֶת-עַם הָאָרֶץ.

5 And the LORD smote the king, so that he was a leper unto the day of his death, and dwelt in a house set apart. And Jotham the king's son was over the household, judging the people of the land.

The tzadi (first letter) in "tza'arat" doesn't appear in "Azariah", so I guess this is an argument based on similar sound and circumstances.