Adjacent (adjective)

1. Located near or next to something.
2. Lying near or close to something.

Origin:

Late middle english: from latin adjacent- "lying near", from the verb adiacēre, from ad- "near" + iacēre "lie".

Examples:

1. The two buildings are adjacent to each other.
2. The room is adjacent to the kitchen.
3. The park is adjacent to the river.
4. The countries are adjacent to each other.
5. The town is adjacent to the city.