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

This nest egg will ensure a nice retirement for us.

The circumstances ensured that he would arrive in time.

OPTIONS:
- different meanings
- the same meaning

A: the same meaning

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

I really want to sing in the school choir.

She was singing while she was cooking.

OPTIONS:
- different meanings
- the same meaning

A: the same meaning

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

Trim lumber.

Trim an airplane.

OPTIONS:
- different meanings
- the same meaning

A:
different meanings