opencut vs opencast

opencut and opencast both are adjectives.

Word	Noun	Adjective	Verb	Adverb
opencut	No	Yes	No	No
opencast	No	Yes	No	No

As adjectives, opencut and opencast are synonyms defined as:

opencut and opencast: (of mines and mining) worked from the exposed surface

opencut (adjective)	opencast (adjective)
(of mines and mining) worked from the exposed surface	(of mines and mining) worked from the exposed surface