Surely though in any case either there is some unified theme or purpose for a service or you are building a monolithic application which can just have the same

Surely though in any case either there is some unified theme or purpose for a service or you are building a monolithic application which can just have the same name as the product. If you are putting random functions into a service to the point where you can't even pick a descriptive name, that sounds like you've got bigger problems.