colourless vs washy

colourless and washy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
colourless	No	Yes	No	No
washy	No	Yes	No	No

colourless (adjective)	washy (adjective)
weak in color; not colorful	having lost freshness or brilliance of color
lacking in variety and interest	overly diluted; thin and insipid