news item vs factoid

news item and factoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
news item	Yes	No	No	No
factoid	Yes	No	No	No

As nouns, factoid is a hyponym of news item; that is, factoid is a word with a more specific, narrower meaning than news item:

news item (noun)	factoid (noun)
an item in a newspaper	a brief (usually one sentence and usually trivial) news item
	something resembling a fact; unverified (often invented) information that is given credibility because it appeared in print