altitude: the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)
distance: size of the gap between two places
skinheads: a youth subculture that appeared first in England in the late 1960s as a working-class reaction to the hippies; hair was cropped close to the scalp; wore work-shirts and short jeans (supported by suspenders) and heavy red boots; involved in attacks against Asians and football hooliganism