openness vs receptivity

openness and receptivity both are nouns.

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

As nouns, openness and receptivity are synonyms defined as:

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

Other synonyms of openness include receptiveness.

openness (noun)	receptivity (noun)
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)
willingness or readiness to receive (especially impressions or ideas)
without obstructions to passage or view