noun, noun which may take the genitive case particle 'no'
naturalism
Refers to the philosophical view that everything arises from natural properties and causes, or to the literary movement emphasizing realistic depiction of life.
He tried to explain human behavior from a naturalistic standpoint.
That novel is considered a representative work of naturalist literature.
写実主義 (realism) focuses on depicting reality as it is, while 自然主義 (naturalism) often emphasizes a more scientific, deterministic view of human life and nature.
naturalistic fallacy
Compound of 自然 (nature) and 主義 (principle, doctrine), likely a Meiji-era calque from Western philosophical terms.