metalworking vs metalwork

metalworking and metalwork both are nouns.

Word	Noun	Adjective	Verb	Adverb
metalworking	Yes	No	No	No
metalwork	Yes	No	No	No

As nouns, metalworking and metalwork are synonyms defined as:

metalworking and metalwork: the activity of making things out of metal in a skillful manner

metalworking (noun)	metalwork (noun)
the activity of making things out of metal in a skillful manner	the activity of making things out of metal in a skillful manner
	the metal parts of something