Question: Sentence 1: The locus of points equidistant from a given point is a circle.
Sentence 2: A circle is the locus of points from which the distance to the center is a given value, the radius.
Does locus mean the same thing in these two sentences?
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Answer: the same meaning

Question: Sentence 1: When he lectures, I can not follow.
Sentence 2: Follow the trail.
Does follow mean the same thing in these two sentences?
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Answer: different meanings

Question: Sentence 1: He had a number of chores to do.
Sentence 2: It was one of the best numbers he ever did.
Does number mean the same thing in these two sentences?
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Answer:
different meanings