Close by and Next door

Next door and close by are semantically related in nearby topic. In some cases you can use "Next door" instead an adjective phrase "Close by", when it comes to topics like next to, close by physically.

Next door adverb - At or in or to the adjacent residence.

Close by and next door are semantically related in next to topic. Sometimes you can use "Close by" instead an adjective phrase "Next door".