simulation vs roughcast

simulation and roughcast both are nouns.

Word	Noun	Adjective	Verb	Adverb
simulation	Yes	No	No	No
roughcast	Yes	No	Yes	No

As nouns, roughcast is a hyponym of simulation; that is, roughcast is a word with a more specific, narrower meaning than simulation:

Other hyponyms of simulation include figure, globe, mock-up, planetarium, restoration.

simulation (noun)	roughcast (noun)
the act of giving a false appearance	a rough preliminary model
the act of imitating the behavior of some situation or some process by means of something suitably analogous (especially for the purpose of study or personnel training)	a coarse plaster for the surface of external walls
representation of something (sometimes on a smaller scale)
(computer science) the technique of representing the real world by a computer program

simulation (verb)	roughcast (verb)
	hew roughly, without finishing the surface
	apply roughcast to
	shape roughly