Documentation
Part of speech: noun
Definition: Something transposed from a thought to a document; the written account of an idea. Documents that explain the operation of a particular software program.
Example sentence: Even if there is endless documentation, it would be impossible to know what a man thought inside his own mind... This is where the novelist's creative imagination has to take over.
Corroboration
Part of speech: noun
Definition: The act of corroborating, strengthening, or confirming; addition of strength; confirmation; as, the corroboration of an argument, or of information.That which corroborates.