He is right that toughness is a vital component of a coach's approach.
Times, Sunday Times (2010)
Productivity doesn't make big headlines, but it is a vital component of growth and prosperity.
Peril and Promise: A Commentary on America (1990)
The show also established the catchphrase as a vital component of comedy; the repetition it inspired in young viewers helped to broadcast the show and spread its appeal.
Times, Sunday Times (2007)