different between oarlock vs earlock

English

oar +? lock

oarlock (plural oarlocks)

A device attached to the gunwale of a rowboat to hold the oars in place while rowing.
- 1906: Horatio Alger, Joe the Hotel Boy [1]
  But, as luck would have it, scarcely had he started to row his boat again when an oarlock broke, and so it took him the best part of an hour to make the trip.

ear +? lock

earlock (plural earlocks)

A lock of curly hair worn by the ear, often by Jewish men for religious reasons, and formerly by Elizabethan dandies.

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