What is the basis used for classifying a White Dwarf as a 'dwarf' compared to a Brown Dwarf?

Answer

Its collapsed, Earth-like physical size after its death

White Dwarfs are classified as dwarfs because of their drastically reduced physical size compared to their progenitor star, contrasting with Brown Dwarfs, which are named for their sub-stellar mass.

What is the basis used for classifying a White Dwarf as a 'dwarf' compared to a Brown Dwarf?
astronomydwarfstarsstellar classification