arrangement; preparations; search (by police)
national border; provincial border
linear; rectilinear; straight-line; straightforward; simple
difference; disparity; gap
division; section; demarcation; partition; segmentation; subdivision
details; particulars; longitude and latitude; warp and weft; warp and woof
mankind; the human creature; fellow creatures
to agree; to decide upon; to enter into (a contract)
boundary; border; limit; bounds; frontier
firmly; absolutely; flatly; by far; far and away; by a long shot
river; stream; River; the ... river
mountain range; mountain belt
coastline; shoreline; coastal railway
shoal; wide shallow beach
high tide; high water; full tide
metre; meter; meter; gauge
kilo-; 1000; kilogram; kilogramme; kilometre; kilometer
to cross over; to go across; to extend; to cover; to range
serious; honest; sober; grave; earnest; steady
dominion; territory; possession
to rewrite; to overwrite; to renew; to transfer
on the sea; surface of the sea
(on) land; ground; shore; track-and-field events
point of reference; reference point
tide; current; sea water; opportunity; chance; thin soup of fish or shellfish boiled in seawater
delineation; demarcation; drawing a line (e.g. between what's acceptable and unacceptable); (measuring) ruler
island; one's territory (e.g. of a sex worker, organized crime gang); one's turf
mark (for quick identification or recognition); sign; landmark; guide; (arch.) trademark
horizon (related to bodies of water)
the ocean; the great deep
artificial satellite; man-made satellite
patrolling (esp. using ships or aircraft)
vessel; ship; shipping; seacraft
to strike against; to collide with; to encounter; to meet; to clash