Embouchements refer to the points at which a river flows into the sea or a large body of water. There are several synonyms for embouchements which can be used in place of the word to vary the expression. Some of these synonyms include estuary, mouth, delta, inlet, bay, and fjord. They all refer to the same place where a river meets a large body of water and can be used interchangeably depending on the context in which they are used. These synonyms can be used to enhance the clarity and precision of descriptions of different types of water bodies and to create a vivid picture in the reader's mind.