noctambulism vs somnambulism

noctambulism and somnambulism both are nouns.

Word	Noun	Adjective	Verb	Adverb
noctambulism	Yes	No	No	No
somnambulism	Yes	No	No	No

As nouns, noctambulism and somnambulism are synonyms defined as:

Other synonyms of noctambulism include noctambulation, sleepwalking, somnambulation.

noctambulism (noun)	somnambulism (noun)
walking by a person who is asleep	walking by a person who is asleep