patency vs openness

patency and openness both are nouns.

Word	Noun	Adjective	Verb	Adverb
patency	Yes	No	No	No
openness	Yes	No	No	No

As nouns, openness is a hypernym of patency; that is, openness is a word with a broader meaning than patency:

patency (noun)	openness (noun)
the openness (lack of obstruction) of a bodily passage or duct	characterized by an attitude of ready accessibility (especially about one's actions or purposes); without concealment; not secretive
the property of being easy to see and understand	willingness or readiness to receive (especially impressions or ideas)
	without obstructions to passage or view