Whats the difference between SSD and the other one?? (Google doesn't help)

[Renox-1361535]

I know that's where all ur files and videos go but whats the difference? Also whats 1tsomething

 

[Cons29]

if you are referring to HDD (mechanical) and ssd, well ssd is faster, cooler (lower temp), and is not noisy compared to HDD as ssd does not have moving parts but is more expensive than hdd.
a typical setup involves an ssd and an HDD (for large files)