1) Marketing terminology 
Inseparability is used in marketing to describe a key quality of services as distinct from goods. Inseparability is the characteristic that a service has which renders it impossible to divorce the supply or production of the service from its consumption. Other key characteristics of services include perishability, intangibility and variability{dn|...
• (n.) The quality or state of being inseparable; inseparableness.
In·sep`a·ra·bil'i·ty noun [ Latin inseparabilitas : confer French inséparabilité .] The quality or state of being inseparable; inseparableness. Locke. 
a characteristic of services, describing how service products tend to be produced at the same time as they are consumed.