Vulgarisation

Many a gentleman of the old school has been provoked to remark regretfully upon the under-bred manners and bearing of even the better classes in the modern industrial communities; and the decay of the ceremonial code—or as it is otherwise called, the vulgarisation of life—among the industrial classes proper has become one of the chief enormities of latter-day civilisation in the eyes of all persons of delicate sensibilities.

William Edward Collinson wrote a vulgarization book in Esperanto about linguistics.

The Asolani (composed about 1500–2, printed in 1505 and dedicated to Lucrezia Borgia), a work of vulgarisation in the good sense, explained in Platonic dialogue form the principles of Platonic love, […]

Artistic practices which adopt the traits of popular culture, whether in the art objects themselves, or in the ways they are disseminated, are seen to involve the vulgarisation of art.