width,
breadth the extent of something from side to side
narrowness -
a restriction of range or scope; "the problem with achievement tests is the narrowness they impose on students"; "the attraction of the book is precisely its narrowness of focus"; "frustrated by the narrowness of people's horizons"
restriction,
limitation the act of keeping something within specified bounds (by force if necessary); "the restriction of the infection to a focal area"
narrowness -
an inclination to criticize opposing opinions or shocking behavior
narrowness -
a small margin; "the president was not humbled by his narrow margin of victory"; "the landslide he had in the electoral college obscured the narrowness of a victory based on just 43% of the popular vote"