abstract
anchorage
architecture
background
balance
banister
black
bridge
circulation
construction
contrast
deck
detail
engineering
focal
hard
horizontal
industrial
infinity
line
monochrome
mounting
painted
pattern
pier
platform
point
rail
railroad
rhythm
screw
setting
shape
shine
spreader
stable
starch
steel
stiffener
structure
symmetry
texture
traffic
transport
truss
urban
white