Plugging is a term mainly used to describe the action of inserting or filling something into a hole or gap. However, there are several words that can be used interchangeably with this term, depending on the context. These synonyms include "inserting," "filling," "stuffing," "packing," "fitting," and "embedding." In a more informal sense, the word "promoting" can also be used as a synonym for plugging, particularly when referring to marketing or advertising. No matter which word is chosen, it is important to understand the nuances of each term and select the most appropriate one for the situation at hand.