Assertion: engraving | /r/HasProperty | physical process
Facets:
Source sentences:
text: The primary difference between them is that engraving is a physical process, and etching is a chemical process.
text: The primary difference between them is that engraving is a physical process and etching is a chemical process.
text: However, the chief difference between them is that engraving is a physical process and etching is a chemical process.