Not every animal or plant can be domesticated. Historically, successful candidates meet several criteria, often called the "domestication syndrome": Could We Domesticate (Non-Bird) Dinosaurs?
To a species is to bring it under human control through selective breeding and genetic adaptation over many generations. Unlike taming, which affects a single individual, domestication fundamentally changes the DNA and behavior of an entire population to better serve human needs for food, labor, or companionship. The Requirements for Domestication domesticate