Q: Does "keep" have the same meaning in the following two sentences?

Keep appointments.

She never keeps her promises.

OPTIONS:
- different meanings
- the same meaning

A: the same meaning

Q: Does "locus" have the same meaning in the following two sentences?

The locus of points equidistant from a given point is a circle.

A circle is the locus of points from which the distance to the center is a given value, the radius.

OPTIONS:
- different meanings
- the same meaning

A: the same meaning

Q: Does "third" have the same meaning in the following two sentences?

He ate a third of the pie.

A simple harmony written in major thirds.

OPTIONS:
- different meanings
- the same meaning

A:
the same meaning