How to highlight all occurrences of a word in an Emacs buffer?

Question

Notepad++ has a convenient feature: if you select a word in your text (not necessarily a keyword), the word is highlighted throughout the text. Can this be done in Emacs as

Answer 1

Type C-s, then type the current word or type C-w. As a bonus, you can now hit C-s again to search for the word.

This is called incremental search.