> Combining is to combine items in your inventory to contraptions.

Combining is also just acting with you selecting an object first.

Daedalic removed the verbs entirely, and made left mouse button act, right button look.

To combine, you click on an inventory item, and then on another item or object.

To talk, you click on a person.

To flip a switch, you click it.

To look at stuff, you can always right-click.

Daedalic has made many games in the spirit of the old Lucasarts games, and been very successful. And demonstrated you don't need verbs in the game.