logical argument vs line of reasoning

logical argument and line of reasoning both are nouns.

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

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

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

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

logical argument (noun)	line of reasoning (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