kantian

As nouns the difference between kantian and egoism

is that kantian is a person who subscribes to philosophical views associated with Immanuel Kant while egoism is the tendency to think selfishly with exclusive self-interest in mind.

As an adjective Kantian

is of, pertaining to, or resembling the philosophical views of Immanuel Kant (1724-1804).

As nouns the difference between existentialism and kantian

is that existentialism is (philosophy|not countable) a twentieth-century philosophical movement emphasizing the uniqueness of each human existence in freely making its self-defining choices while kantian is (philosophy) a person who subscribes to philosophical views associated with immanuel kant.

As an adjective kantian is

(philosophy) of, pertaining to, or resembling the philosophical views of (immanuel kant) (1724-1804).