How to sign: the line or plane indicating the limit or extent of something
Similiar / Same: boundary, bound
Categories: extremity
Within this category: boundary line, bourn, city line, county line, district line, edge, end, frontier, hairline, heliopause, limit, outline, Rubicon, shoreline, surface
How to sign: the greatest possible degree of something
"what he did was beyond the bounds of acceptable behavior"; "to the limit of his ability";
Similiar / Same: limit, boundary
Categories: extent
Within this category: knife-edge, thermal barrier, utmost, verge