I would like to know if there is a list of words that I can identify that serve little purpose. I would like to search a database for exact matches with out the use of certain words. Ex include the, an,a, to, and. I am not sure what you call these type of words.
According to the ones you shared in your example:
- the, an,a = articles.
- and = additive coordinating conjunction.
- to = preposition.
I guess you could use just "Common Words" or "Stop Words", that's usually among the technical jargons that are stated while reading about indexing operations in Search Engines.