The word inventory conscious of the image of collection of things and a list of those items in our mind. Inventory means raw material, semi-finished good, consumable and finished good. We need inventory to make a directory in direct sale of a final product.
Inventory deals with Tangible items. One could have inventory of intangible item like quality or trades one poses for or a happy memory etc. Invention refers to the value of all the items in the inventory list that is owned by the business.