English suffix ~ER

*In English we often use the suffix ~er after a verb to show that a person or thing does that verb.

In baseball the person who pitches the ball is called the pitcher, the person who catches the pitches is called the catcher.

A floor wiper wipes your floor.

A sharpener makes your pencils sharp. (It sharpens your pencils)

Free Stock Photo of Pencil Sharpener Vector Graphic - Public ...

A container contains - holds - something. Tupperware is a well known company in North America that makes plastic containers.