Related by context. Frequent words. (Click for all words.) 55 Manhole covers 52 exhaust vents 49 Trash cans 48 metal grates 48 electrical conduits 47 air conditioning vents 47 breezeways 47 wires dangling 46 ventilation ducts 46 dryer vents 46 stair treads 46 plumbing pipes 46 stairwells 46 doorframes 45 vents 45 chimney flue 45 Ducts 45 door jambs 45 air conditioning ducts 45 stairways 45 Throgs Neck Bridge 45 vent hood 45 crawlspaces 45 Manhole 44 Razor wire 44 sidewalks driveways 44 metal grate 44 elevator shafts 43 dripping faucet 43 drainpipes 43 Escalators 43 Parked cars 43 Poorly maintained 43 downpipes 43 blowholes 43 hoses 43 subway tunnels 43 tripping hazard 43 doorways 42 exhaust vent 42 downpipe 42 shutoff valve 42 muddy puddles 42 welding torches 42 grate 42 roofing tar 42 stanchions 42 towel racks 42 porta potties 42 hose nozzle 42 Zakim Bridge 42 window ledges 42 grates 42 ductwork 42 manholes 42 stove burners 42 venetian blinds 42 gangways 42 braziers 42 tripping hazards 42 hose 42 sewer grate 42 staircases 41 nylon mesh 41 passageways 41 skirting boards 41 grill grate 41 air ducts 41 streetlamp 41 fire hydrants 41 sidewalks 41 plywood sheets 41 waterproof membrane 41 Unsightly 41 cooling ducts 41 manhole covers 41 Drifting snow 41 subway 41 tunnels 41 walkways 41 gaslights 41 doorless 41 heating ducts 41 lampposts 41 thermostatically controlled 41 subway entrances 41 Propane tanks 41 Clogged 41 circular staircase 41 ducts 41 metal railings 41 rooves 41 pipes 41 Picnic tables 41 catenary 41 clogged gutters 40 Garbage cans 40 drying rack 40 uneven surfaces 40 sidewalk 40 drainpipe