The phrase "as well as" is used to indicate that something is being added to another thing. It implies inclusion or equivalence and often signals that two ideas or items are both relevant or important. For example, when you say "She likes coffee as well as tea," it indicates that she enjoys both beverages.
The phrase "as well as" is a conjunction that combines "as" and "well." The word "as" originates from Old English "æs," meaning "that," and "well" comes from Old English "wela," meaning "in a good manner." The combination signifies equivalence and inclusion.