somnambulation vs noctambulism

somnambulation and noctambulism both are nouns.

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

As nouns, somnambulation and noctambulism are synonyms defined as:

Other synonyms of somnambulation include noctambulation, sleepwalking, somnambulism.

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