Within any limits, enclosure, or substance; inside; internal; inner.
the interior apartments of a house; the interior surface of a hollow ball
Remote from the limits, frontier, or shore; inland.
the interior parts of a region or country
Inside of something
We saw the internal compartments.
Within the body
Her bleeding was internal.
Concerned with the domestic affairs of a nation, state or other political community.
The nation suffered from internal conflicts.
Concerned with the non-public affairs of a company or other organisation
An internal investigation was conducted.