initial offering vs IPO

initial offering and IPO both are nouns.

Word	Noun	Adjective	Verb	Adverb
initial offering	Yes	No	No	No
IPO	Yes	No	No	No

As nouns, initial offering and IPO are synonyms defined as:

initial offering and IPO: a corporation's first offer to sell stock to the public

Other synonyms of initial offering include initial public offering.

initial offering (noun)	IPO (noun)
a corporation's first offer to sell stock to the public	a corporation's first offer to sell stock to the public