projective geometry vs descriptive geometry

projective geometry and descriptive geometry both are nouns.

Word	Noun	Adjective	Verb	Adverb
projective geometry	Yes	No	No	No
descriptive geometry	Yes	No	No	No

As nouns, projective geometry and descriptive geometry are synonyms defined as:

projective geometry and descriptive geometry: the geometry of properties that remain invariant under projection

projective geometry (noun)	descriptive geometry (noun)
the geometry of properties that remain invariant under projection	the geometry of properties that remain invariant under projection