article vs novelty

article and novelty both are nouns.

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

As nouns, novelty is a hyponym of article; that is, novelty is a word with a more specific, narrower meaning than article:

Other hyponyms of article include breakable, knickknack, notion, ware.

article (noun)	novelty (noun)
one of a class of artifacts	cheap showy jewelry or ornament on clothing
nonfictional prose forming an independent part of a publication	a small inexpensive mass-produced article
(grammar) a determiner that may indicate the specificity of reference of a noun phrase	originality by virtue of being refreshingly novel
a separate section of a legal document (as a statute or contract or will)	originality by virtue of being new and surprising

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