Industry
An industry is a narrower category within a , describing a more specific line of business, oil drilling within energy, hospital operators within healthcare, semiconductor design within technology. Two companies can sit in the same broad while running genuinely different businesses at the industry level, which is why checking a company's industry, not just its , gives a sharper sense of what its numbers should typically look like.
Industry classifications aren't perfectly precise, and a company that operates across more than one line of business can blur the boundary between two industries at once. What matters isn't memorizing an exact label, it's using the industry as a reference point for what kind of margins, growth, and capital needs are normal for that specific kind of business.