privately held corporation vs closed corporation

privately held corporation and closed corporation both are nouns.

Word	Noun	Adjective	Verb	Adverb
privately held corporation	Yes	No	No	No
closed corporation	Yes	No	No	No

As nouns, privately held corporation and closed corporation are synonyms defined as:

privately held corporation and closed corporation: a corporation owned by a few people; shares have no public market

Other synonyms of privately held corporation include close corporation, private corporation.

privately held corporation (noun)	closed corporation (noun)
a corporation owned by a few people; shares have no public market	a corporation owned by a few people; shares have no public market