receptiveness vs openness

receptiveness and openness both are nouns.

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

As nouns, receptiveness and openness are synonyms defined as:

receptiveness and openness: willingness or readiness to receive (especially impressions or ideas)

Other synonyms of receptiveness include receptivity.

receptiveness (noun)	openness (noun)
willingness or readiness to receive (especially impressions or ideas)	characterized by an attitude of ready accessibility (especially about one's actions or purposes); without concealment; not secretive
	willingness or readiness to receive (especially impressions or ideas)
	without obstructions to passage or view