1.A) "God" as a title of authority
"God" (Hebrew "el, elohim", Greek "theos") is on the one hand a title and means as much as "mighty one". This explains why Moses is also called God in Exodus 4:16. People from Israel are called gods (Elohim) because they were given full POWER over others by God the Father (Psalm 82:6; John 10:34), e.g., judges (Exodus 21:6, 22:8).
As an object of (mistaken) worship, even a piece of wood (Isaiah 44:15) or even one's own belly (Philippians 3:19) can be a "god."
"God" in biblical usage generally refers to something or someone to whom one is subordinate, comparable to a title such as "president" or "executive." To get a complete impression, it is always necessary to add who is being led (e.g., "the God of Israel").
In absolute form, as the God over all and everything,
it always and only refers to the Father Yahuwah (YHWH)
(over 2300 times in the Bible).