pale vs colorless

pale is a noun but colorless is not a noun.

Word	Noun	Adjective	Verb	Adverb
pale	Yes	Yes	Yes	No
colorless	No	Yes	No	No

pale (noun)	colorless (noun)
a wooden strip forming part of a fence

pale (adjective)	colorless (adjective)
abnormally deficient in color as suggesting physical or emotional distress	weak in color; not colorful
lacking in vitality or interest or effectiveness	lacking in variety and interest
very light colored; highly diluted with white
not full or rich
(of light) lacking in intensity or brightness; dim or feeble

pale (verb)	colorless (verb)
turn pale, as if in fear