Englishfor English speakers
registered
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adjective
(of a boat or vessel) furnished with necessary official documents specifying ownership etc
—
adjective
listed or recorded officially
record is made of 'registered mail' at each point on its route to assure safe delivery
registered bonds
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adjective
(of animals) officially recorded with or certified by a recognized breed association; especially in a stud book
a registered Percheron
pollution
Noun
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Pollution is when bad or harmful things are put into the environment.
Nobody visits the river any more because of all the pollution.
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Pollution is the state of being polluted.
source
Verb
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If you source something, then you obtain or receive it.
source
Noun
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The source of some material, an idea, a product, etc. is the place it came from originally.
XYZ company can't supply these parts anymore, so we need to find a new source.
Church sources said four people were injured and 100 to 200 were taken away by the police.
The paper comes primarily from British sources.
is the main source of global warming.