"neighboring" in the verb sense
1. neighbor, neighbour
live or be located as a neighbor
"the neighboring house"
2. neighbor, neighbour
be located near or adjacent to
"Pakistan neighbors India"
"neighboring" in the adjective sense
1. adjacent, conterminous, contiguous, neighboring
having a common boundary or edge abutting touching Massachusetts and Connecticut"
"Rhode Island has two bordering states
"the side of Germany conterminous with France"
"Utah and the contiguous state of Idaho"
"neighboring cities"
Source: WordNet® (An amazing lexical database of English)
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