Here's why:
* Article vs. Article: "Article" is a noun referring to a written piece, like a news story or an essay. It's not the same as "a," which is an indefinite article used before singular nouns.
* Proper Usage: You would say:
* "An article with the word lightning." ("An" is used before words that start with a vowel sound, like "article.")
* "An article about lightning."
* "An article that mentions lightning."
Let me know if you have any other questions!