rival
Concise Oxford English Dictionary © 2008 Oxford University Press:
rival/ˈrʌɪvl/
▶noun a person or thing competing with another for superiority or the same objective.
■ [with neg.] a person or thing equal to another in quality.
▶verb (rivals, rivalling, rivalled; US rivals, rivaling, rivaled) be equal or comparable to.– derivatives
rivalrous adjective,
rivalry noun (pl. rivalries).
rivalrous adjective,
rivalry noun (pl. rivalries).
'rival' also found in these Oxford entries:

