Subsection (noun)

1. A section or division of a larger section or document.
2. A part of something, especially a document, that deals with a particular subject or aspect.

Origin:

From sub- ("under") + section ("a cutting, a divisio.n")

Examples:

1. The subsection on tax deductions in the new bill is particularly confusing.
2. The subsection in the textbook covered the history of the Roman Republic.
3. The report was divided into several sections, with each subsection focusing on a different aspect of the research.
4. The subsection on safety instructions in the manual is especially important to read.
5. The scientist carefully read through each subsection of the journal article before making a decision.