This is the 11470th most frequent Russian word.
документальные
Documentary.
Here, 'документальные' means 'documentary' and modifies the noun 'фильмы', referring to films that are factual and educational.
Я смотрю документальные фильмы о природе.
I watch documentary films about nature.
'Документальные' in this context relates to 'свидетельства', signifying evidence based on documents or factual information.
Документальные свидетельства подтвердили его невиновность.
Documentary evidence confirmed his innocence.
'Документальные' modifies 'записи', indicating records that are based on official documents or verifiable sources.