charmer vs pretender

charmer and pretender both are nouns.

Word	Noun	Adjective	Verb	Adverb
charmer	Yes	No	No	No
pretender	Yes	No	No	No

As nouns, pretender is a hypernym of charmer; that is, pretender is a word with a broader meaning than charmer:

charmer: someone with an assured and ingratiating manner
pretender: a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives

Other hypernyms of charmer include dissembler, dissimulator, hypocrite, phoney, phony.

charmer (noun)	pretender (noun)
a person who charms others (usually by personal attractiveness)	a person who makes deceitful pretenses
someone with an assured and ingratiating manner	a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives