refresher vs legal fee

refresher and legal fee both are nouns.

Word	Noun	Adjective	Verb	Adverb
refresher	Yes	No	No	No
legal fee	Yes	No	No	No

As nouns, legal fee is a hypernym of refresher; that is, legal fee is a word with a broader meaning than refresher:

refresher: a fee (in addition to that marked on the brief) paid to counsel in a case that lasts more than one day
legal fee: a fee paid for legal service

refresher (noun)	legal fee (noun)
a course that reviews and updates a topic for those who have not kept abreast of developments	a fee paid for legal service
a drink that refreshes
a fee (in addition to that marked on the brief) paid to counsel in a case that lasts more than one day