מָגוֹגMâgôwg

proper name [of a territory]: land of Gog (Ezekiel 38:2; Ezekiel 39:6; Genesis 10:2; 1 Chronicles 1:5)

Pronunciation: maw-gogue' · Hebrew/Aramaic (Old Testament) · H4031

Same root

גּוֹגGôwg · H1463Gog, the name of an Israelite, also of some nothern nation
ΜαγώγMagṓg · G3098Magog, a foreign nation, i.e. (figuratively) an Antichristian party

Where it appears

Appears 4 times in the Bible.

Genesis 10:2 The descendants of Japheth were Gomer, Magog, Madai, Javan, Tubal, Meshech, and Tiras.
1 Chronicles 1:5 The descendants of Japheth were Gomer, Magog, Madai, Javan, Tubal, Meshech, and Tiras.
Ezekiel 38:2 “Son of man, turn and face Gog of the land of Magog, the prince who rules over the nations of Meshech and Tubal, and prophesy against him.
Ezekiel 39:6 And I will rain down fire on Magog and on all your allies who live safely on the coasts. Then they will know that I am the Lord.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).