adjacent

adjective
  1. Next to or adjoining something else; sharing a common boundary or edge. adjective
    The two houses are adjacent to each other, separated only by a small fence.
    The library is adjacent to the university campus, making it convenient for students.
  2. Having a position or relationship that is close or similar in nature or time. adjective
    The events occurred in adjacent years, with only a few months between them.
    The rooms are adjacent in the hotel, allowing easy access between them.