charmer vs sweet talker

charmer and sweet talker both are nouns.

Word	Noun	Adjective	Verb	Adverb
charmer	Yes	No	No	No
sweet talker	Yes	No	No	No

As nouns, charmer and sweet talker are synonyms defined as:

charmer and sweet talker: someone with an assured and ingratiating manner

Other synonyms of charmer include smoothie, smoothy.

charmer (noun)	sweet talker (noun)
a person who charms others (usually by personal attractiveness)	someone with an assured and ingratiating manner
someone with an assured and ingratiating manner