The word "Elohim," was used in Biblical text to denote God. As it's been explained, Elohim is the plural form for Gods. The word "El" simply means God. In fact, El, is a Pagan God of the Canaanites. Look at it this way. When Moses took his people to the Promised Land, it was in the land of Canaan where these people would settle, in the land of El. El was known as the creator of the earth (Isaiah 40:28). The ancient tales of El describe him with having an erection. He was the god of sexual power and father of the gods (excluding Baal). The Greeks new him as Cronus. The Romans knew him as Saturn.
So many names to describe a single deity. El was believed to have been an old man with a long grey (or white) beard and was known as the Ancient of Days (Daniel 7:9). The images of a bearded old man is also expressed in modern days as being Father Time whom is also associated with Saturn. See the connection? They're one and the same Archetype.
The image of El was a sacred bull like the golden calf being worshipped by the Hebrews during the exodus saga. His consort was Asherah. When those of the exodus took over the land of Canaan, her name became Astarte and then Ashoreth(1 Kings 11:15), and finally Ashtoroth. Other gods mentioned in Biblical text were Yahweh Tsabaoth, Lord of Armies (Jeremiah 28:2) Baal, Lord (Psalms 68:4), who was said to ride upon the clouds. Eheieh, I Am (Exodus 3:14). Adonai, Lord (Malachi 3:1). Ilabi, God of my father (Genesis 31:42). Shaddai El Chai, God Almighty (Genesis 17:1).
The popular name of Jehovah is a corruption of Yahweh and is in fact wrongly used. The Hebrews wanted a collection of all stories related to their myths and gods. This would unify the tribes and a collected work was gathered in what we now call the Bible. From this, the modern ideas of God would later come into existence.