sophist vs casuist

sophist and casuist both are nouns.

Word	Noun	Adjective	Verb	Adverb
sophist	Yes	No	No	No
casuist	Yes	No	No	No

As nouns, sophist and casuist are synonyms defined as:

sophist and casuist: someone whose reasoning is subtle and often specious

sophist (noun)	casuist (noun)
someone whose reasoning is subtle and often specious	someone whose reasoning is subtle and often specious