line of reasoning vs logical argument

line of reasoning and logical argument both are nouns.

Word	Noun	Adjective	Verb	Adverb
line of reasoning	Yes	No	No	No
logical argument	Yes	No	No	No

As nouns, line of reasoning and logical argument are synonyms defined as:

line of reasoning and logical argument: a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning

Other synonyms of line of reasoning include argument, argumentation, line.

line of reasoning (noun)	logical argument (noun)
a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning	a course of reasoning aimed at demonstrating a truth or falsehood; the methodical process of logical reasoning