As nouns the difference between oiler and owler
is that oiler is (nautical) an oil tanker while owler is (northern english dialect) the alder tree.
oiler
English
Noun
(
en noun)
(nautical) An oil tanker
An oil well
A junior role in the engine room of a ship, senior only to a wiper, consisting mainly of keeping machinery lubricated.
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owler
English
Noun
(
en noun)
(Northern English dialect) The alder tree.
(dated) A smuggler of sheep or wool (see owling).
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