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

Your assumption that I would agree was unwarranted.

On the assumption that he has been injured we can infer that he will not to play.

A: different meanings

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

A return to one's question.

The return of spring.

A: different meanings

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

She had a difficult delivery.

His reluctant delivery of bad news.

A:
different meanings