altocumulus cloud vs altocumulus

altocumulus cloud and altocumulus both are nouns.

Word	Noun	Adjective	Verb	Adverb
altocumulus cloud	Yes	No	No	No
altocumulus	Yes	No	No	No

As nouns, altocumulus cloud and altocumulus are synonyms defined as:

altocumulus cloud and altocumulus: a cumulus cloud at an intermediate altitude of 2 or 3 miles

altocumulus cloud (noun)	altocumulus (noun)
a cumulus cloud at an intermediate altitude of 2 or 3 miles	a cumulus cloud at an intermediate altitude of 2 or 3 miles