The common knowledge is widely accepted idea in a specific field, it is well known, but the documented knowledge require further details, as they are less known.
The statement ‘Electrons in an atom are negatively charged’ is very general, hence, it is an example of Common knowledge.
The statement ‘In Faulkner’s works, his imaginary county is a microcosm of southern attitudes’ requires more knowledge about the work done by Faulkner, hence, it must be documented.
The statement ‘Deciduous trees lose their leaves every fall charged’ is very general; hence, it is an example of Common knowledge.
The statement ‘Plant cell structure differs from animal cell structure charged’ is very general, hence, it is an example of Common knowledge.
The statement ‘Brazil is in South America charged’ is very general; hence, it is an example of Common knowledge.
The statement ‘A movie critic’s explanation of the main character’s dile’ is specific to the movie, hence, it require more knowledge, so, it must be documented.