- deacon (n.)
- Old English deacon, diacon, from Late Latin diaconus, from Greek diakonos "servant of the church, religious official," literally "servant," from dia- "thoroughly" + PIE *kon-o-, from root *ken- (1) "to set oneself in motion."
- conation (n.)
- in philosophical use from 1836, from Latin conationem (nominative conatio) "an endeavoring, effort," noun of action from past participle stem of conari "to endeavor, to try," from PIE *kona-, from root *ken- (1) "to set oneself in motion" (see deacon).
- archdeacon (n.)
- Old English arcediacon, from Church Latin archidiaconus, from Ecclesiastical Greek arkhidiakonon "chief deacon;" see arch- + deacon.