“Primitive” is an Adjective. The dictionary wraps these words around it: First (see PRIME) 1, Existing in the beginning or the earliest times or ages; ancient; original. 2. Characteristic or imitative of of the earliest ages, uncivilized. 3. Not derivative; primary; basic. 4. Of, or having to do with a culture with a relatively low level of technology. 5. Primordial, fundamental.
“Practical” is also an Adjective. The dictionary defines it as: 1. Of, exhibited in, or obtained through practice or action. 2. Usable, workable; useful and sensible. 3. Concerned with the application of knowledge to useful ends, rather than with theory, speculation, etc. 4. Given to, or experienced from, actual practice. 5. Of, concerned with, or dealing realistically and sensibly with everyday activities. 6. Matter-of-fact.