His hobby is collecting adult toys.

She is enriching her sexual life by using adult toys.

I made a mistake.

His fault is unforgivable.

Hydrogen peroxide is widely used as an oxidizing agent.

Cyanocobalamin is a type of vitamin B12.

She called me 'Tom'.

There was a swelling on his leg.

He had a big bump on his head.

He had a large swelling on his foot.