Another name for hard disk is called; Hard Drive
The external hard disk is called; External Hard drive
In computers there are different ways of storing information and all could come under the name drives but the primary storage of a computer which is called hard disk is also called hard drive.
Now, the hard drive could be internal or external and so the one to store additional information is called External Hard Drive.
Read more about Computer Storage Devices at; https://brainly.com/question/19667078