different between colly vs colliness

English

From Middle English cole (“coal”) + -y.

colly (comparative collier, superlative colliest)

(Britain, dialect) black as coal
- 1780, unknown author, Twelve Days of Christmas
  four colly birds

colly (third-person singular simple present collies, present participle collying, simple past and past participle collied)

(transitive, archaic) to make black, as with coal
- Thou hast not collied thy face enough, stinkard

colly (plural collies)

colly +? -ness

colliness (uncountable)

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