Synonyms for Backing (same or very similar meaning)
WordNet sense 1 (financial resources provided to make some project possible):
funding, support, financial backing, financial supportWordNet sense 2 (something forming a back that is added for strengthening):
mountWordNet sense 3 (the act of providing approval and support):
backup, championship, patronage, championshipFrom the ODE community, based on WordNetadd/edit