seducer vs ladies' man

seducer and ladies' man both are nouns.

Word	Noun	Adjective	Verb	Adverb
seducer	Yes	No	No	No
ladies' man	Yes	No	No	No

As nouns, seducer and ladies' man are synonyms defined as:

Other synonyms of seducer include lady killer.

seducer (noun)	ladies' man (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