Disable Comments on Pages

Commenting (Discussion) is default wordpress option. You could disable commenting for all pages in wordpress settings->discussion-> disable “Allow people to post comments on new articles”. Next step (you need to it only one time): edit any page or post, there is “Screen option” button on right top, below admin top bar, press it, put a mark next to Discussion, press “Sceen option” to hide it. Then you edit post/page you will see “Discussion” option below textarea (where you write some text or put images), so you could choose on which post/page you want to enable commenting.