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

Keep appointments.

We kept to the original conditions of the contract.

A: the same meaning

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

Start at the beginning and go on until you come to the end.

At the end of the story, the main characters fall in love.

A: the same meaning

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

Time stops for nobody.

These times were erroneously converted between zones.

A:
different meanings