Take up and Tear into

Take up verb - To move from a lower to a higher place or position.

Tear into and take up are semantically related In some cases you can use "Tear into" instead a verb "Take up".

Tear into verb - Hit violently, as in an attack.

Take up and tear into are semantically related in set to work topic. Sometimes you can use "Take up" instead a verb "Tear into", if it concerns topics such as start action.