Pc is a computer that can be used for work video games and other things that have huge files. Ps4 is a smaller device that is only used for playing video games but can storge smaller files than a pc.
Similarities between Pc and Ps4.
They are both devices that have storage can run video games and can also both be used to browse the internet or watch tv/videos.
Examples of Pc and Ps4
Pc can run bigger filed games like Pubg or Fallout 4.
Can run smaller games easier like World War ll, or WarFrame.