physical barriers
Walls, fences, gates
Physical barriers are tangible obstacles that block or impede movement, access, or passage.
The term appears in contexts ranging from architecture physical barriers to wheelchair access to biology the skin acts as a physical barrier against infection to geopolitics physical barriers along borders.
Unlike procedural or social barriers, physical barriers exist as concrete structures or natural features that must be physically navigated or removed.
- barricadesStructures preventing passage
- guard railsProtective roadside barriers
- traffic conesPortable roadway warning markers
- damsWater-blocking structures
- sea wallsBarriers protecting shores from waves
fences · gates · moats · cliffs · fortifications · oceans · roadblocks · walls · swamps · mountains · checkpoints · prison walls · hedges · ditches · forests · deserts · landslides · rivers
- Plant Defensedisease resistance, pest resistance, immune response, innate immunity, bacterial resistance
- health measuressocial distancing, contact tracing, quarantine, self-isolation, lockdowns
- securitysecurity guard, security cameras, alarm system, security system, lock
- animal defensespoison, venom, toxin, toxins, horns
- termite controltermiticide, exterminator, fumigation, tenting, monitoring systems
physical barrierspsychological barriers
Internal obstacles hindering progress
cultural barriers · warnings · rules · regulations · language barriers
physical barriersopenings
Available positions or gaps
passageways · gateways · corridors · access points · pathways
physical barriersopen space
Unobstructed outdoor area
free access · open terrain · open ground · clearance · void