posts related to page widget

Hello,
i am searching for a way to add posts related to a page in a widget where title can be also custom,

for example i have two pages
one of them is general trading, in this page i want to add a widget with a title of products, and sort related posts under it and at the end i want a link to open all related products.
second page is pharmacy, the widget title should be medicines and under it i should sort the related medicines to this page, so anyone can help?