Why is something depricated in a language?

Question

Hey , I was thinking why do something like tags or packages deprecated in a language instead of just adding a new feature? And Does deprication mean that it is removed completely or is just discouraged to use but exists in the language, because if it is removed then it means that we cannot use codes written and old books and old scripts.

Answer 1

"In computer programming, a deprecated language entity is one that is tolerated or supported but not recommended. For example, a number of elements and attributes are deprecated in HTML 4.0 , meaning that other means of accomplishing the task are preferred. " This was the first result on google, consider searching there next time please.

Answer 2

Additional reads about HTML tags

https://www.w3docs.com/learn-html/deprecated-html-tags.html