Not usually. A celebrity is famous first and may promote across many topics, while an influencer built an audience around a specific niche and tends to hold closer trust within it. Some people are both. For most campaigns a relevant niche creator converts better than broad fame.
Whether influencers and celebrities are the same thing or whether the distinction matters when choosing who to work with.
The overlap is real, yet the useful distinction is trust and relevance. Celebrities bring broad reach and awareness, which suits a launch that needs scale. Niche influencers bring a smaller but more engaged audience that treats their recommendation as a peer opinion, which suits consideration and conversion. Neither is better in the abstract, it depends on the goal. What matters more than the label is audience fit and authenticity, since a mid-size creator whose followers match your buyer often beats a famous name with a mismatched crowd. Filter by niche and check follower quality at /find-influencers/ before you decide which type fits.