patency vs obviousness

patency and obviousness both are nouns.

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

As nouns, patency and obviousness are synonyms defined as:

patency and obviousness: the property of being easy to see and understand

Other synonyms of patency include noticeability, noticeableness.

patency (noun)	obviousness (noun)
the openness (lack of obstruction) of a bodily passage or duct	the property of being easy to see and understand
the property of being easy to see and understand