He traveled with me as a fellow pilgrim.

He found a large hollow in the mountain.

She is learning how to use adjectival nouns.

The introduction of a new system takes time and cost.

We decided to introduce a new system.

That pupil goes to school every day.

Last night, a large-scale riot broke out in the city.

I talked about old memories with my schoolmate.

He has contributed to the company for many years as an elderly worker.

'Father' and 'father' are words of the same origin.