Strong's #2041: ergon (pronounced er'-gon)
 from a primary (but obsolete) ergo (to work); toil (as an effort or occupation); by implication, an act:--deed, doing, labour, work.
Thayer's Greek Lexicon:
 ̓́ 
 
  ergon 
 
 1) business, employment, that which any one is occupied
 
 1a) that which one undertakes to do, enterprise, undertaking
 
 2) any product whatever, any thing accomplished by hand, art, industry, or mind
 3) an act, deed, thing done: the idea of working is emphasised in opp. to that which is less than work
 
  Part of Speech: noun neuter
Relation: from a primary (but obsolete) ergo (to work)
  Citing in TDNT: 2:635, 251
 
Usage:
This word is used 176 times:
Matthew 5:16: "they may see your good  works, and glorify your Father"
Matthew 11:2: "the prison the  works of Christ, he sent two of his"
Matthew 23:3: "do not ye after their  works: for they say, and"
Matthew 23:5: "But all their  works they do for to be seen of men: they"
Matthew 26:10: "woman? for she hath wrought a good  work upon me."
Mark 13:34: "and to every man his  work, and commanded the porter"
Mark 14:6: "trouble ye her? she hath wrought a good  work on me."
Luke 11:48: "that ye allow the  deeds of your fathers: for they"
Luke 24:19: "prophet mighty in  deed and word before God"
John 3:19: "light, because their  deeds were evil."
John 3:20: "the light, lest his  deeds should be reproved."
John 3:21: "light, that his  deeds may be made manifest, that they are wrought"
John 4:34: "and to finish his  work."
John 5:20: "he will show him greater  works than these, that ye may marvel."
John 5:36: "than that of John: for the  works which the Father hath given"
John 5:36: "finish, the same  works that I do, bear witness"
John 6:28: "that we might work the  works of God?"
John 6:29: "This is the  work of God, that ye believe on"
John 7:3: "also may see the  works that thou doest."
John 7:7: "of it, that the  works thereof are evil."
John 7:21: "unto them, I have done one  work, and ye all marvel."
John 8:39: "children, ye would do the  works of Abraham."
John 8:41: "Ye do the  deeds of your father. Then said"
John 9:3: "but that the  works of God should be made manifest in him."
John 9:4: "must work the  works of him that sent me, while it is"
John 10:25: "ye believed not: the  works that I do in"
John 10:32: "them, Many good  works have I showed you from my"
John 10:32: "for which of those  works do ye stone me?"
John 10:33: "saying, For a good  work we stone thee not; but"
John 10:37: "I do not the  works of my Father, believe me"
John 10:38: "me, believe the  works: that ye may know, and believe,"
John 14:10: "he doeth the  works."
John 14:11: "or else believe me  for the very works' sake."
John 14:12: "on me, the  works that I do shall he do also;"
John 15:24: "among them the  works which none other man did,"
John 17:4: "earth: I have finished the  work which thou gavest me to"
Acts 5:38: "this counsel or this  work be of men,"
Acts 7:22: "words and in  deeds."
Acts 7:41: "rejoiced in the  works of their own hands."
Acts 9:36: "was full of good  works and almsdeeds which she did."
Acts 13:2: "Saul for the  work whereunto I have called"
Acts 13:41: "for I work  a work in your days, a work"
Acts 13:41: "in your days,  a work which ye shall in no wise believe, though"
Acts 14:26: "of God for the  work which they fulfilled."
Acts 15:18: "are all his  works from the beginning of the world."
Acts 15:38: "and went not with them to the  work."
Acts 26:20: "to God, and do  works meet for repentance."
Romans 2:6: "to every man according to his  deeds:"
Romans 2:7: "by patient continuance in well  doing seek for glory and honor"
Romans 2:15: "Which show the  work of the law written in"