Bo Hai vs Po Hai

Bo Hai and Po Hai both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bo Hai	Yes	No	No	No
Po Hai	Yes	No	No	No

As nouns, Bo Hai and Po Hai are synonyms defined as:

Bo Hai and Po Hai: an inlet of the Yellow Sea, on the coast of Eastern China

Other synonyms of Bo Hai include Bohai Sea.

Bo Hai (noun)	Po Hai (noun)
an inlet of the Yellow Sea, on the coast of Eastern China	an inlet of the Yellow Sea, on the coast of Eastern China