entrance fee vs admission charge

entrance fee and admission charge both are nouns.

Word	Noun	Adjective	Verb	Adverb
entrance fee	Yes	No	No	No
admission charge	Yes	No	No	No

As nouns, entrance fee and admission charge are synonyms defined as:

Other synonyms of entrance fee include admission, admission fee, admission price, entrance money, price of admission.

entrance fee (noun)	admission charge (noun)
the fee charged for admission	the fee charged for admission