casuistry vs logical argument

casuistry and logical argument both are nouns.

Word	Noun	Adjective	Verb	Adverb
casuistry	Yes	No	No	No
logical argument	Yes	No	No	No

As nouns, logical argument is a hypernym of casuistry; that is, logical argument is a word with a broader meaning than casuistry:

casuistry: argumentation that is specious or excessively subtle and intended to be misleading
logical argument: a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning

Other hypernyms of casuistry include argument, argumentation, line, line of reasoning.

casuistry (noun)	logical argument (noun)
moral philosophy based on the application of general ethical principles to resolve moral dilemmas	a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning
argumentation that is specious or excessively subtle and intended to be misleading