a firefighter

to extinguish; to put out / to cut power; to turn off / to erase, to delete / to kill, to execute

to use / to employ / to make use of, to apply / to spend

fire / a flame / cooking fire / a firestarter / sparks / light (matches or lighter)

fire fighting, firefighting / Short for 消防署. fire station, fire department, firehouse

to vanish

use one thing for many purposes / work someone hard

to use one's head

a fire / one of the five classical elements in traditional Chinese philosophy and medicine: see Wu Xing on Wikipedia.Wikipedia

a fire