Piet Mondrian vs Mondrian

Piet Mondrian and Mondrian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Piet Mondrian	Yes	No	No	No
Mondrian	Yes	No	No	No

As nouns, Piet Mondrian and Mondrian are synonyms defined as:

Piet Mondrian and Mondrian: Dutch painter whose work (intersecting lines at right angles and planes in primary colors) influenced the development of abstract art (1872-1944)

Piet Mondrian (noun)	Mondrian (noun)
Dutch painter whose work (intersecting lines at right angles and planes in primary colors) influenced the development of abstract art (1872-1944)	Dutch painter whose work (intersecting lines at right angles and planes in primary colors) influenced the development of abstract art (1872-1944)