goodness has 1 distinct synonym spread across 2 of its 2 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. Its 2 recorded opposites are badness, evilness.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
that which is pleasing or valuable or useful
“weigh the good against the bad”
Synonyms, antonyms and the broader and narrower relations for goodness come from Princeton University’s WordNet. Full sources and licences.
moral excellence or admirableness
“there is much good to be found in people”