Next to and Next-door

Next to adverb - Very close to but not completely.

Next-door and next to are semantically related. In some cases you can use "Next-door" instead an adjective phrase "Next to".

Next-door adjective - Not being distant in time, space, or significance.

Next to and next-door are semantically related. Sometimes you can use "Next to" instead an adjective phrase "Next-door".