lady killer vs seducer

lady killer and seducer both are nouns.

Word	Noun	Adjective	Verb	Adverb
lady killer	Yes	No	No	No
seducer	Yes	No	No	No

As nouns, lady killer and seducer are synonyms defined as:

Other synonyms of lady killer include ladies' man.

lady killer (noun)	seducer (noun)
a man who takes advantage of women	a man who takes advantage of women
	a bad person who entices others into error or wrongdoing