1: ἔργον
(Strong's #2041 — Noun Neuter — ergon — er'-gon )

denotes "a work" (Eng., "work" is etymologically akin), "deed, act." When used in the sense of a "deed or act," the idea of "working" is stressed, e.g., Romans 15:18; it frequently occurs in an ethical sense of human actions, good or bad, e.g., Matthew 23:3; 26:10; John 3:20,21; Romans 2:7,15; 1—Thessalonians 1:3; 2—Thessalonians 1:11 , etc; sometimes in a less concrete sense, e.g., Titus 1:16; James 1:25 (RV, "that worketh," lit., "of work"). See LABOR , WORK.

2: πρᾶξις
(Strong's #4234 — Noun Feminine — praxis — prax'-is )

denotes "a doing, transaction, a deed the action of which is looked upon as incomplete and in progress" (cp. prasso, "to practice"); in Matthew 16:27 , RV, "deeds," for AV, "works;" in Luke 23:51 , "deed;" in ver. 41, the verb is used [see Note (2) below]; Acts 19:18; Romans 8:13; Colossians 3:9 . In Romans 12:4 it denotes an "action," business, or function translated "office." See OFFICE , WORK.

James 3:16
3: ποίησις
(Strong's #4162 — Noun Feminine — poiesis — poy'-ay-sis )

"a doing" (akin to poieo, "to do"), is translated "deed" in James 1:25 , AV, (RV, "doing").

Romans 1:20Ephesians 2:10
4: εὐεργεσία
(Strong's #2108 — Noun Feminine — euergesia — yoo-erg-es-ee'-ah )

see BENEFIT , No. 1.

1—Corinthians 5:3Luke 23:412—Corinthians 12:12 WORK.Acts 24:2CORRECTION