As nouns the difference between positivity and proudness
is that positivity is (uncountable) the condition of being positive (in all senses); positivism while proudness is (mostly archaic) pride.
positivity
English
Noun
(uncountable) The condition of being positive (in all senses); positivism
(countable) The result of being positive.
Synonyms
* positiveness
Antonyms
* negativity
proudness
English
Noun
(-)
(mostly archaic) Pride.