Improvements installed on leased premises by tenants to enable or enhance the tenants' practice of their profession are called

Fixtures generally refer to items that are permanently attached to a property and become part of it, thus belonging to the landlord once installed. While trade fixtures are a type of fixture, the term "fixtures" alone does not specify the tenant's right to remove them, making it an inaccurate choice in this context.

Easements are legal rights to use someone else's property for a specific purpose, such as accessing a road or utility line. They do not pertain to improvements made by tenants within a leased space and thus are not applicable to the question regarding tenant-installed enhancements for professional practice.

Emblements refer to crops or plants that are cultivated by a tenant on rented land. This term is specific to agricultural contexts and concerns the right to harvest those crops after the lease ends. Emblements do not apply to physical improvements or installations made for business purposes.