The term scholasticism refers to any period in the history of philosophy in which the practice of philosophy has become hopelessly academic or divorced from real-world issues. Scientism is often roughly equivalent to reductionism , since the outcome for the study of human and social affairs of applying each of these approaches is much the same.
Secularism is the principle that there exist no gods or purely spiritual entities.
Thus, while Atheism is a form of secularism, not every secularist is an atheist. In popular usage, secularism often has the same connotations of immoralism that are imputed more strongly to atheism. Some adherents go further and claim that we don't have any direct knowledge of reality, only of sensations. The popular meaning is obviously non-philosophical and quite unrelated. In rare instances, sensualism is used to mean sensationalism .