loan shark vs shylock

loan shark and shylock both are nouns.

Word	Noun	Adjective	Verb	Adverb
loan shark	Yes	No	No	No
shylock	Yes	No	No	No

As nouns, loan shark and shylock are synonyms defined as:

loan shark and shylock: someone who lends money at excessive rates of interest

Other synonyms of loan shark include moneylender, usurer.

loan shark (noun)	shylock (noun)
someone who lends money at excessive rates of interest	someone who lends money at excessive rates of interest