cargo deck vs cargo area

cargo deck and cargo area both are nouns.

Word	Noun	Adjective	Verb	Adverb
cargo deck	Yes	No	No	No
cargo area	Yes	No	No	No

As nouns, cargo deck and cargo area are synonyms defined as:

cargo deck and cargo area: the space in a ship or aircraft for storing cargo

Other synonyms of cargo deck include cargo hold, hold, storage area.

cargo deck (noun)	cargo area (noun)
the space in a ship or aircraft for storing cargo	the space in a ship or aircraft for storing cargo