scumbag vs disagreeable person

scumbag and disagreeable person both are nouns.

Word	Noun	Adjective	Verb	Adverb
scumbag	Yes	No	No	No
disagreeable person	Yes	No	No	No

As nouns, disagreeable person is a hypernym of scumbag; that is, disagreeable person is a word with a broader meaning than scumbag:

Other hypernyms of scumbag include unpleasant person.

scumbag (noun)	disagreeable person (noun)
a person who is deemed to be despicable or contemptible	a person who is not pleasant or agreeable