neural net vs RAS

neural net and RAS both are nouns.

Word	Noun	Adjective	Verb	Adverb
neural net	Yes	No	No	No
RAS	Yes	No	No	No

As nouns, RAS is a hyponym of neural net; that is, RAS is a word with a more specific, narrower meaning than neural net:

neural net: any network of neurons or nuclei that function together to perform some function in the body
RAS: the network in the reticular formation that serves an alerting or arousal function

Other hyponyms of neural net include reticular formation, RF, reticular activating system.

neural net (noun)	RAS (noun)
any network of neurons or nuclei that function together to perform some function in the body	the network in the reticular formation that serves an alerting or arousal function
computer architecture in which processors are connected in a manner suggestive of connections between neurons; can learn by trial and error