ELOHIM: God (a plural noun, more than two, used with singular verbs); Elohim occurs 2,570 times in the OT, 32 times in Gen. 1. God as Creator, Preserver, Transcendent, Mighty and Strong. Eccl., Dan. Jonah use Elohim almost exclusively. See Gen. 17:7, 6:18, 9:15, 50:24; I Kings 8:23; Jer. 31:33; Isa. 40:1.
EL SHADDAI: God Almighty or "God All Sufficient." 48 times in the OT, 31 times in Job. First used in Gen. 17:1, 2. (Gen. 31:29, 49:24, 25; Prov. 3:27; Micah 2:1; Isa. 60:15, 16, 66:10-13; Ruth 1:20, 21) In Rev. 16:7, "Lord God the Almighty." The Septuagint uses Greek "ikanos" meaning "all-sufficient" or "self-sufficient." The idols of the heathen are called "sheddim."
ADONAI: Lord in our English Bibles (Capital letter 'L ', lower case, 'ord') (Adonai is plural, the sing. is "adon"). "Master'' or "Lord" 300 times in the OT always plural when referring to God, when sing. the reference is to a human lord. Used 215 times to refer to men. First use of Adonai, Gen. 15:2. (Ex. 4:10; Judges 6:15; 2 Sam. 7:18-20; Ps. 8, 114:7, 135:5, 141:8, 109:21-28). Heavy use in Isaiah (Adonai Jehovah). 200 times by Ezekiel. Ten times in Dan. 9.