adjacent

nearest in space or position; immediately adjoining without intervening space

• “had adjacent rooms”
• “in the next room”
• “the person sitting next to me”
• “our rooms were side by side”

having a common boundary or edge; touching

• “abutting lots”
• “adjoining rooms”
• “Rhode Island has two bordering states; Massachusetts and Conncecticut”
• “the side of Germany conterminous with France”
• “Utah and the contiguous state of Idaho”
• “neighboring cities”

near or close to but not necessarily touching

• “lands adjacent to the mountains”
• “New York and adjacent cities”