What is this pot used for?

The nurse treated my wound.

This software has forward compatibility.

This software maintains backward compatibility.

Functional analysis is a branch of mathematics that studies the properties of functions in infinite-dimensional spaces.

Simple Mail Transfer Protocol is a protocol for sending and receiving emails on the Internet.

These two software have complete interchangeability.

This compound is called cyclopentadecane.

Mr. Kayamoto went to the festival.

After the great earthquake disaster, we worked together to rebuild our home.