bookseller
n.a person whose job is to sell books. You might find one in a small shop that sells only books or in a larger store that sells many different things.
n.a person who sells books as a profession. Often used to distinguish a retail professional from an author or a publisher.
“The local bookseller recommends a new novel every month.”
“After years of working in a large chain store, she decided to open her own independent bookseller shop.”
“The independent bookseller remains a vital part of the literary ecosystem, providing a curated selection of titles that larger retailers often overlook in favor of mass-market bestsellers.”
From Middle English boksellere, bok-sillere, equivalent to book + seller.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.