simulate vs pattern

simulate is not a noun while pattern is a noun.

Word	Noun	Adjective	Verb	Adverb
simulate	No	No	Yes	No
pattern	Yes	No	Yes	No

As verbs, pattern is a hyponym of simulate; that is, pattern is a word with a more specific, narrower meaning than simulate:

Other hyponyms of simulate include conform to, follow, mock, take off, mime, mimic, model, follow, take after, emulate.

simulate (noun)	pattern (noun)
	a customary way of operation or behavior
	a decorative or artistic work
	a perceptual structure
	a model considered worthy of imitation
	something intended as a guide for making something else
	something regarded as a normative example
	graphical representation (in polar or Cartesian coordinates) of the spatial distribution of radiation from an antenna as a function of angle
	the path that is prescribed for an airplane that is preparing to land at an airport

simulate (verb)	pattern (verb)
make a pretence of	plan or create according to a model or models
create a representation or simulation of	form a pattern
reproduce someone's behavior or looks