panderer vs offender

panderer and offender both are nouns.

Word	Noun	Adjective	Verb	Adverb
panderer	Yes	No	No	No
offender	Yes	No	No	No

As nouns, offender is a hypernym of panderer; that is, offender is a word with a broader meaning than panderer:

panderer: someone who procures customers for whores (in England they call a pimp a ponce)
offender: a person who transgresses moral or civil law

Other hypernyms of panderer include wrongdoer.

panderer (noun)	offender (noun)
someone who procures customers for whores (in England they call a pimp a ponce)	a person who transgresses moral or civil law
a person who serves or caters to the vulgar passions or plans of others (especially in order to make money)