sloppiness vs inattentiveness

sloppiness and inattentiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
sloppiness	Yes	No	No	No
inattentiveness	Yes	No	No	No

As nouns, inattentiveness is a hypernym of sloppiness; that is, inattentiveness is a word with a broader meaning than sloppiness:

sloppiness: the quality of not being careful or taking pains
inattentiveness: the trait of not being considerate and thoughtful of others

sloppiness (noun)	inattentiveness (noun)
the quality of not being careful or taking pains	the trait of not being considerate and thoughtful of others
falsely emotional in a maudlin way	a lack of attentiveness (as to children or helpless people)
a lack of order and tidiness; not cared for
the wetness of ground that is covered or soaked with water