Solid State Drives are not technically “hard drives,” though both SSDs and HDDs serve the same purpose of storing data on your computer. SSDs rely on flash memory, making them faster, more durable, and last longer than HDDs. Standard hard disk drive or HDD's stores data using a moving read-write magnetic head on a rotating metallic platter.
A SSD drive makes use of a non-volatile memory state to store and access data. SSD is a non-mechanical hard drive. This makes it very fast at reading and writing data, with a great advantage over hard disk drives.
A SSD drive is a Solid-State Storage Device that uses integrated circuit assemblies to store data persistently. Normally using flash memory, and functioning as secondary storage in the hierarchy of computer storage.