If the MCU is anything like the comics it will never be entirely clear and will change quite a bit from writer to writer. (As opposed to DC comics where one of the characters is the archangel to whom has been entrusted the vengeance of the Lord and Lucifer had his own series iirc).
Whatever the latest movie retcons it to?Anyway, yeah. What is a god in the MCU?
In movie two he says so. Yet in movie three he had a change of heart and is all "god of this, goddess of that"Odin outright says that the Asgardians are not truely gods,

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.