Dig up and Open up

Dig up verb - To come upon after searching, study, or effort.

Open up and dig up are semantically related in reveal topic. In some cases you can use "Open up" instead a verb "Dig up", when it comes to topics like find.

Open up verb - Cause to open or to become open.

Dig up and open up are semantically related in reveal topic. Sometimes you can use "Dig up" instead a verb "Open up", if it concerns topics such as find.