lowlife vs disagreeable person

lowlife and disagreeable person both are nouns.

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

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

Other hypernyms of lowlife include unpleasant person.

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