articles of agreement vs shipping articles

articles of agreement and shipping articles both are nouns.

Word	Noun	Adjective	Verb	Adverb
articles of agreement	Yes	No	No	No
shipping articles	Yes	No	No	No

As nouns, articles of agreement and shipping articles are synonyms defined as:

articles of agreement and shipping articles: a contract between crew and captain of a ship

articles of agreement (noun)	shipping articles (noun)
a contract between crew and captain of a ship	a contract between crew and captain of a ship