good-neighborliness vs good-neighbourliness

good-neighborliness and good-neighbourliness both are nouns.

Word	Noun	Adjective	Verb	Adverb
good-neighborliness	Yes	No	No	No
good-neighbourliness	Yes	No	No	No

As nouns, good-neighborliness and good-neighbourliness are synonyms defined as:

good-neighborliness and good-neighbourliness: a disposition to be friendly and helpful to neighbors

Other synonyms of good-neighborliness include neighborliness, neighbourliness.

good-neighborliness (noun)	good-neighbourliness (noun)
a disposition to be friendly and helpful to neighbors	a disposition to be friendly and helpful to neighbors