Fire up and Raise hell

Fire up verb - To rouse to strong feeling or action.

Raise hell and fire up are semantically related. In some cases you can use "Raise hell" instead a verb "Fire up".

Raise hell verb - Take strong and forceful action, as to object or express discontent.

Fire up and raise hell are semantically related. Sometimes you can use "Fire up" instead a verb phrase "Raise hell".