unrelated vs orthogonal

unrelated and orthogonal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unrelated	No	Yes	No	No
orthogonal	No	Yes	No	No

unrelated (adjective)	orthogonal (adjective)
not connected by kinship	not pertinent to the matter under consideration
lacking a logical or causal relation	having a set of mutually perpendicular axes; meeting at right angles
	statistically unrelated