different between pitiful vs pitifulness

English

From Middle English pityful, piteful, piteeful, equivalent to pity +? -ful.

pitiful (comparative pitifuller, superlative pitifullest)

(now rare) Feeling pity; merciful.
- 1851, Herman Melville, Moby-Dick:
  Straightway, he now goes on to make a full confession; whereupon the mariners became more and more appalled, but still are pitiful.
So appalling or sad that one feels or should feel sorry for it; eliciting pity.
Synonyms: see Thesaurus:lamentable
Of an amount or number: very small.

pitiful (comparative more pitiful, superlative most pitiful)

pitiful +? -ness

pitifulness (usually uncountable, plural pitifulnesses)

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