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floppy disk vs. hard disk

floppy disk
[flop-ee disk] / ˈflɒp i ˈdɪsk /
Or floppydisk

noun

Computers.
floppy disks plural

  1. a portable storage medium consisting of a square plastic case containing a thin disk coated with magnetic material that is inserted into a drive to read and write data: popular from the 1970s through the 1990s.

hard disk
[hahrd disk] / ˈhɑrd ˈdɪsk /

noun

Computers.
hard disks plural

  1. a rigid circular platter coated with magnetic material, on which data and programs can be stored.