Miscellaneous Obscure Terms that I Discovered Spontaneously Interesting to Store Despite Reduced Pragmatical Utility

Gesamtkunstwerk

Borrowed from german (Literal meaning: "Total Work of Art"), it refers to the art works which intersect all artistic forms on its creation. Creating the platonic form of art, so to speak. Coined by Wagner, albeit he utilized it in exactly two ofhis essays, and referring to his own operas. Prideful, much.

Propaedeutics

Knowledge required for the immersion in a course. In linguistics, it's used for the grammatical and vocabulary languages properties shared between languages, which the learning of one taughts you the shared patterns in another, easing the difficulty curve. There's modest evidence of Esperanto having a propaedeutic value in long-term learning of various indoeuropean languages.