lowlife vs rotter

lowlife and rotter both are nouns.

Word	Noun	Adjective	Verb	Adverb
lowlife	Yes	No	No	No
rotter	Yes	No	No	No

As nouns, lowlife and rotter are synonyms defined as:

lowlife and rotter: a person who is deemed to be despicable or contemptible

Other synonyms of lowlife include bum, crumb, dirty dog, git, puke, rat, scum bag, scumbag, skunk, so-and-so, stinker, stinkpot.

lowlife (noun)	rotter (noun)
a person who is deemed to be despicable or contemptible	a person who is deemed to be despicable or contemptible