Noun and の adjective
きんりん
コウイチ大統領は、近隣諸国との関係をないがしろにはしなかった。
President Koichi never ignored relationships with neighboring countries.
All the near neighbors are the people who live around you and near you. They're a part of the neighborhood.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.