In plain words
Storage is the long-term home for files and saved data.
Why learners confuse it
Memory and storage both get measured with large numbers, so they can sound interchangeable. They are not.
Storage is the long-term place where data stays even after power is off.
People often confuse storage with memory. That makes disk-space and performance problems harder to explain.
Storage is where files, installed programs, and saved data live for later use.
Storage is the place where the computer keeps things for later.
Storage is the long-term home for files and saved data.
Memory and storage both get measured with large numbers, so they can sound interchangeable. They are not.
Study the larger concept after the word itself becomes clear.