documentation vs corroboration

documentation and corroboration both are nouns.

Word	Noun	Adjective	Verb	Adverb
documentation	Yes	No	No	No
corroboration	Yes	No	No	No

As nouns, documentation and corroboration are synonyms defined as:

documentation and corroboration: confirmation that some fact or statement is true through the use of documentary evidence

Other synonyms of documentation include certification.

documentation (noun)	corroboration (noun)
documentary validation	confirmation that some fact or statement is true through the use of documentary evidence
confirmation that some fact or statement is true through the use of documentary evidence
program listings or technical manuals describing the operation and use of programs