contest >> /ˈkɑnˌtɛst/
Definition: [transitive verb] Engage in competition to attain (a position of power)
Example: she declared her intention to contest the presidency
Definition: [transitive verb] Oppose (an action, decision, or theory) as mistaken or wrong.
Example: the former chairman contests his dismissal
Definition: [noun] An event in which people compete for supremacy in a sport, activity, or particular quality.
Example: a beauty contest