Lord when used as a name is Noun, which means a powerful or noble man.
Upon googling, I found this quick result on top of first page:
noun
1.
a man of noble rank or high office; a nobleman.
"lords and ladies were entertained here"
synonyms:noble, nobleman, peer, aristocrat, patrician, grandee; feudal lord, landowner, lord of the manor, seigneur; duke, earl, viscount
"lords and ladies were entertained here"
antonyms:commoner
(in the UK) a title given formally to a baron, and less formally to a marquess, earl, or viscount (prefixed to a family or territorial name).
noun: Lord
"Lord Derby"
(in the UK) the House of Lords, or its members collectively.
plural noun: Lords; plural noun: the Lords
(in the UK) a courtesy title given to a younger son of a duke or marquess (prefixed to a Christian name).
noun: Lord
"Lord John Russell"
used in compound titles of other people of authority.
"Lord High Executioner"
historical
a feudal superior, especially the owner of a manor house.
a master or ruler.
"our lord the king"
synonyms:master, lord and master, ruler, leader, chief, superior, monarch, sovereign, king, emperor, prince, governor, commander, captain, overlord, suzerain, baron, potentate, liege, liege lord More
antonyms:servant, inferior
a name for God or Christ.
noun: Lord
"give thanks to the Lord"
synonyms:God, the Father, Jehovah, the Almighty, the Supreme Being, the Deity; More
exclamation
exclamation: Lord
1.
used in exclamations expressing surprise or worry, or for emphasis.
"Lord, I'm cold!"
verb
verb: lord; 3rd person present: lords; past tense: lorded; past participle: lorded; gerund or present participle: lording
1.
act in a superior and domineering manner towards (someone).
"when we were at school, you used to lord it over us"
synonyms:order about/around, boss about/around, give orders to, domineer, dominate, dictate to, pull rank on, tyrannize, bully, browbeat, oppress, repress, ride roughshod over, have under one's thumb; More
antonyms:be submissive
2.
archaic
confer the title of Lord upon.
"Sir Cadwallader Pleadwell has been lately lorded"
now although I'm no way linked to this guy Aleem but my username is my nick from years on cyber world + steam + origin and it's a PITA to explain everything guy in the lobby that Lord not always means God!
Hope this will clear you confusion 
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