freshness vs rudeness

freshness and rudeness both are nouns.

Word	Noun	Adjective	Verb	Adverb
freshness	Yes	No	No	No
rudeness	Yes	No	No	No

As nouns, rudeness is a hypernym of freshness; that is, rudeness is a word with a broader meaning than freshness:

freshness: the trait of being rude and impertinent; inclined to take liberties
rudeness: a manner that is rude and insulting

Other hypernyms of freshness include discourtesy.

freshness (noun)	rudeness (noun)
originality by virtue of being refreshingly novel	a manner that is rude and insulting
the property of being pure and fresh (as if newly made); not stale or deteriorated	a wild or unrefined state
the trait of being rude and impertinent; inclined to take liberties
originality by virtue of being new and surprising
an alert and refreshed state