rendering machine vs plastering machine

rendering machine and plastering machine both are nouns.

Word	Noun	Adjective	Verb	Adverb
rendering machine	Yes	No	No	No
plastering machine	Yes	No	No	No

As nouns, rendering machine and plastering machine are synonyms defined as:

Other synonyms of rendering machine include plaster machine.

rendering machine (noun)	plastering machine (noun)
a machine for wall rendering.	a machine for wall rendering.