feature article vs article

feature article and article both are nouns.

Word	Noun	Adjective	Verb	Adverb
feature article	Yes	No	No	No
article	Yes	No	Yes	No

As nouns, article is a hypernym of feature article; that is, article is a word with a broader meaning than feature article:

feature article (noun)	article (noun)
a special or prominent article in a newspaper or magazine	one of a class of artifacts
	nonfictional prose forming an independent part of a publication
	(grammar) a determiner that may indicate the specificity of reference of a noun phrase
	a separate section of a legal document (as a statute or contract or will)

feature article (verb)	article (verb)
	bind by a contract; especially for a training period