Etymology
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*aik- 

Proto-Indo-European root meaning "be master of, possess." 

It forms all or part of: fraught; freight; ought (v.); owe; own.

It is the hypothetical source of/evidence for its existence is provided by: Sanskrit ise, iste "he owns, rules," isvara- "owner, lord, ruler;" Avestan ise, is "ruler over," isti- "property, power;" Old English agan "to have, own."

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*kers- 

Proto-Indo-European root meaning "to run."

It forms all or part of: car; career; cargo; caricature; cark; carpenter; carriage; carrier; carry; charabanc; charette; charge; chariot; concourse; concur; concurrent; corral; corridor; corsair; courant; courier; course; currency; current; curriculum; cursive; cursor; cursory; discharge; discourse; encharge; excursion; hussar; incur; intercourse; kraal; miscarry; occur; precursor; recourse; recur; succor.

It is the hypothetical source of/evidence for its existence is provided by: Greek -khouros "running;" Latin currere "to run, move quickly;" Lithuanian karšiu, karšti "go quickly;"Old Irish and Middle Welsh carr "cart, wagon," Breton karr "chariot," Welsh carrog "torrent;" Old Norse horskr "swift."

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