openness vs spatial arrangement

openness and spatial arrangement both are nouns.

Word	Noun	Adjective	Verb	Adverb
openness	Yes	No	No	No
spatial arrangement	Yes	No	No	No

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

openness: without obstructions to passage or view
spatial arrangement: the property possessed by an array of things that have space between them

Other hypernyms of openness include spacing.

openness (noun)	spatial arrangement (noun)
characterized by an attitude of ready accessibility (especially about one's actions or purposes); without concealment; not secretive	the property possessed by an array of things that have space between them
willingness or readiness to receive (especially impressions or ideas)
without obstructions to passage or view