lead story vs news story

lead story and news story both are nouns.

Word	Noun	Adjective	Verb	Adverb
lead story	Yes	No	No	No
news story	Yes	No	No	No

As nouns, news story is a hypernym of lead story; that is, news story is a word with a broader meaning than lead story:

Other hypernyms of lead story include news article, newspaper article.

lead story (noun)	news story (noun)
a news story of major importance	an article reporting news