What is it called refering to the re-rleased albums of famous artists?

Question

Is there any term that refers to the marketing strategy that re-releasing the old artist's songs to earn money? for example, the album like 'The Beatles 1'. or Jimi hendrix or Elvis Presley.
I want to write an essay about this topic. thank you~

Answer 1

isn't it called a cover album? or cover song?

Answer 2

Cover is when someone does a song written by someone else. I think what you're referring to is simply "re-release" or "re-issue".