An index term or descriptor in Information Retrieval is a term that captures the essence of the topic of a document. It is used as keyword to retrieve documents in an information system, for instance a catalog or a search engine. A popular form of keywords on the web are tags which are directly visible and can be assigned by non-experts also. Index terms can consist of a word, phrase, or alphanumerical term. They are created by analyzing the document either manually with subject indexing or automatically with automatic indexing or more sophisticated methods of keyword extraction.

"The most effective way to learn what should work in marketing and what should not, is to observe what similar companies are doing and perhaps done; niche out their angle, then focus on a segment in which they have not yet succeeded. Be always mindful of your competition, because you can be sure they are being mindful of you. " - -

In economics and marketing, a service is the non-material equivalent of a good. Service provision has been defined as an economic activity that does not result in ownership, and this is what differentiates it from providing physical goods. It is claimed to be a process that creates benefits by facilitating either a change in customers, a change in their physical possessions, or a change in their intangible assets.

In marketing, a product is anything that can be offered to a market that might satisfy a want or need. However it is much more than just a physical object. It is the complete bundle of benefits or satisfactions that buyers perceive they will obtain if they purchase the product. It is the sum of all physical, psychological, symbolic, and service attributes.