camping area vs campground

camping area and campground both are nouns.

Word	Noun	Adjective	Verb	Adverb
camping area	Yes	No	No	No
campground	Yes	No	No	No

As nouns, camping area and campground are synonyms defined as:

camping area and campground: a site where people on holiday can pitch a tent

Other synonyms of camping area include bivouac, camping ground, camping site, campsite, encampment.

camping area (noun)	campground (noun)
a site where people on holiday can pitch a tent	a site where people on holiday can pitch a tent