competitor
noun [ C ]
uk/kəmˈpetɪtər/ usa person, product, company, etc. that is trying to compete with others, for example, by trying to make bigger sales in a particular market:
chief/main/major competitor At least one major competitor is gearing up to provide local service at lower prices.
domestic/foreign/overseas competitor In an effort to undercut foreign competitors, the company recently unveiled a low-end model that sells for as little as $360.
Many companies focus much of their energy on taking market share from their competitors.