General synonyms:
* Etching: This is the most common synonym and refers to the process of creating an image on a surface by using acid to eat away at the exposed metal.
* Carving: This implies creating an image or design by cutting into a surface, usually with a sharp tool.
* Imprinting: This refers to the act of making a mark or design on a surface by pressing it into a soft material.
* Incising: This is a more technical term that refers to the process of cutting into a surface with a sharp instrument.
* Inscription: This refers to a written or engraved message, especially on a monument or other object.
More specific synonyms:
* Engraving can also refer to the design itself that is created through the process, so "image" or "design" could be suitable synonyms depending on the context.
* If you're talking about engraving on a surface, "etching" would be a good synonym.
* If you're talking about engraving with a specific tool, you could use a more specific term like "chiselling," "carving," or "cutting."
Ultimately, the best word to use will depend on the specific context and the nuance you want to convey.