A better alternative is available, and the function is marked for removal https://lifecycle.r-lib.org/articles/stages.html#deprecated
A better alternative is available, but the function is kept (softer alternative to deprecated) https://lifecycle.r-lib.org/articles/stages.html#superseded
No longer works and is removed and replaced by another function https://www.rdocumentation.org/packages/base/versions/3.6.2/topics/Defunct