| Main Entry: | bulwark |
| Part of Speech: | noun |
| Definition: | fortification, support |
| Synonyms: | barrier, bastion, buffet, buttress, citadel, defense, embankment, fort, fortress, guard, mainstay, outwork, parapet, partition, protection, rampart, redoubt, safeguard, security, stronghold, vallation |
| Antonyms: | weak point |
| Main Entry: | defense |
| Part of Speech: | noun |
| Definition: | armament; protection system |
| Synonyms: | aegis, armor, arms, barricade, bastille, bastion, bulwark, buttress, citadel, cover, deterrence, dike, embankment, fastness, fence, fort, fortification, fortress, garrison, guard, immunity, munitions, palisade, parapet, position, protection, rampart, redoubt, resistance, safeguard, security, shelter, shield, stockade, stronghold, trench, wall, ward, warfare, weaponry, weapons |
| Antonyms: | desertion, flight, surrender |
| Main Entry: | grade |
| Part of Speech: | noun |
| Definition: | incline, slope |
| Synonyms: | acclivity, ascent, bank, cant, climb, declivity, descent, downgrade, elevation, embankment, gradient, height, hill, inclination, inclined plane, lean, leaning, level, obliquity, pitch, plane, ramp, rise, slant, tangent, tilt, upgrade |
| Main Entry: | harbor |
| Part of Speech: | noun |
| Definition: | place for storing boats in the water |
| Synonyms: | anchorage, arm, bay, bight, breakwater, chuck, cove, dock, embankment, firth, gulf, haven, inlet, jetty, landing, mooring, pier, port, road, roadstead, wharf |
| Notes: | harbor first meant 'shelter' and 'lodging' and that is how the word first entered English place-names, as a 'place of shelter; refuge' for a crowd of people; a port is a haven for vessels and it is equipped for loading and unloading ships, while a harbor is a haven for vessels but does not necessarily have onshore facilities |
| Main Entry: | mound |
| Part of Speech: | noun |
| Definition: | heap, hill |
| Synonyms: | anthill, bank, drift, dune, embankment, hillock, knoll, mass, molehill, mountain, pile, rise, shock, stack, tumulus |
| Antonyms: | depression, ditch, valley |
| Main Entry: | parapet |
| Part of Speech: | noun |
| Definition: | bulwark |
| Synonyms: | barricade, barrier, bastion, buffet, buttress, defense, embankment, fortification, partition, protection, protective wall, rampart, safeguard |
| Main Entry: | rampart |
| Part of Speech: | noun |
| Definition: | fortification, stronghold |
| Synonyms: | barricade, barrier, bastion, breastwork, bulwark, defense, earthwork, elevation, embankment, fence, fort, guard, hill, mound, parapet, protection, ridge, security, support, vallation, wall |
| Main Entry: | shore |
| Part of Speech: | noun |
| Definition: | waterside |
| Synonyms: | bank, beach, border, brim, brink, coast, coastland, embankment, lakeshore, lakeside, littoral, margin, riverbank, riverside, sand, sands, seaboard, seacoast, seashore, shingle, strand, waterfront |
| Antonyms: | inland |