The Lord my Great Lord.
God is the Master and majestic Lord. God is our authority.
Psalms 8 Isaiah 40:3-5 Ezekiel 16:8 Habakkuk 3:19.
Adonai is the plural of Adon. This term is the verbal parallel to Yahweh, Jehovah and YHWH (which was considered too holy to be pronounced). The word "Adonai" is not a proper noun nor is it directly a name of God. It is an emphatic form of the word "Adon" which means "lord" or "master". That is an statement of someone who is above everyone else, the one who is superior, that is why its common use is THE LORD.
Jesus is the Lord.
Jesus rules over all. As the Son of God and Creator of the universe, that title belongs to him by right. That is also the name God gave him for humiliating himself and coming in human likeness to redeem us by his death. Jesus is called our Lord because he rescued us and paid the price for us with his blood, that makes him in a special way, our Lord and Owner.
Revelation 19:16 1 Timothy 6:15.
Lord (Philippians 2:11).
In the beginning was the Word, and the Word was with God, and the Word was God ( John 1:1).