A competitor (person, team, company, etc.) with the same goal as another, or striving to attain the same thing. Defeating a rival may be a primary or necessary goal of a competitor.
“Chris is my biggest rival in the 400-metre race.”
Someone or something with similar claims of quality or distinction as another.
“As a social historian, he has no rival.”
verb
To oppose or compete with.
“to rival somebody in love”
To be equal to, or match, or to surpass another.
adjective
Having the same pretensions or claims; standing in competition for superiority.