Warfighting is a military term for the ability to conduct warfare. Personnel which are capable of this are referred to as warfighters. Taken together, the two terms serve as a particularly good contemporary example of the manner in which new words are coined to supplant older, equivalent terms which have been forgotten, shifted in meaning, or acquired archaic connotations. In this case, the equivalent, older terms are warring and warrior. The former has fallen out of common use, and the latter is archaic.