"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"
Source: WordNet® (An amazing lexical database of English)
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