WordNet: border, margin, perimeter

the boundary line or the area immediately inside the boundary

• hypernym bound, boundary, edge

• hyponym lip

border

• (englanti) border (derivationally related)
• (suomi) laita (synonyymi)

margin

• (englanti) marginal (derivationally related)
• (suomi) reuna (synonyymi)

perimeter

• (suomi) ympärys (synonyymi)