ordinal
Maxwell triangle
Munsell scale
chromatic circle
chromatic spectrum
chromaticity diagram
color circle
color cycle
color index
color mixture curve
color solid
color spectrum
color system
color triangle
complementary color
covert
demitint
feather
feathers
full color
fundamental colors
hackle
half tint
halftone
hue cycle
mail
metamer
monochrome
plumage
primary
primary color
pure color
secondary
secondary color
solar spectrum
spectral color
spectrum
spectrum color
speculum
tertial
tertiary color
thir
third
bird
geological period
period
Carboniferous
Cretaceous
alkyl
allylic
benzyl
biogenic
bituminous
butyl
calcareous
cyclic
geological
herbivorous
lipid
menstrual
palæozoic
quaternary
sedimentary
stratified
transitional
unsaturated
volcanic