protoarchaeology vs protoarcheology

protoarchaeology and protoarcheology both are nouns.

Word	Noun	Adjective	Verb	Adverb
protoarchaeology	Yes	No	No	No
protoarcheology	Yes	No	No	No

As nouns, protoarchaeology and protoarcheology are synonyms defined as:

protoarchaeology and protoarcheology: the study of prehistoric human artifacts and human fossils

protoarchaeology (noun)	protoarcheology (noun)
the study of prehistoric human artifacts and human fossils	the study of prehistoric human artifacts and human fossils