orthogonality vs perpendicularity

orthogonality and perpendicularity both are nouns.

Word	Noun	Adjective	Verb	Adverb
orthogonality	Yes	No	No	No
perpendicularity	Yes	No	No	No

As nouns, orthogonality and perpendicularity are synonyms defined as:

orthogonality and perpendicularity: the relation of opposition between things at right angles

Other synonyms of orthogonality include orthogonal opposition.

orthogonality (noun)	perpendicularity (noun)
the quality of lying or intersecting at right angles	the quality of being at right angles to a given line or plane (especially the plane of the horizon)
the relation of opposition between things at right angles	the relation of opposition between things at right angles