patency vs blatancy

patency and blatancy both are nouns.

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

As nouns, blatancy is a hyponym of patency; that is, blatancy is a word with a more specific, narrower meaning than patency:

Other hyponyms of patency include apparency, apparentness, predominance, predomination.

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