ethics committee vs ethics panel

ethics committee and ethics panel both are nouns.

Word	Noun	Adjective	Verb	Adverb
ethics committee	Yes	No	No	No
ethics panel	Yes	No	No	No

As nouns, ethics committee and ethics panel are synonyms defined as:

ethics committee and ethics panel: a committee appointed to consider ethical issues

ethics committee (noun)	ethics panel (noun)
a committee appointed to consider ethical issues	a committee appointed to consider ethical issues