Since a bounded context is a boundary for a model, it could include concepts from multiple subdomains. Or a single subdomain could be modelled as multiple bounded contexts.

Subdomains vs Bounded Contexts: Areas of the domain vs boundaries of models of the domain.

#DDD

https://medium.com/nick-tune-tech-strategy-blog/domains-subdomain-problem-solution-space-in-ddd-clearly-defined-e0b49c7b586c?utm_source=pocket_mylist