What does zypper is not a typo mean?

I was trying to install kde and the terminal said zypper is not a typo you can use command not found

I answered that in your other thread:

Please do not make multiple posts to ask the same question. If you feel it is in the wrong forum, let us know and we can move it. Press the triangle with an Exclamation in it of** your** wrong post and simply state “This is the wrong forum and to please move your post”. Else, make only one post per problem and we will provide help if we can do so.

Thank You,