historic period vs Victorian era

historic period and Victorian era both are nouns.

Word	Noun	Adjective	Verb	Adverb
historic period	Yes	No	No	No
Victorian era	Yes	No	No	No

historic period (noun)	Victorian era (noun)
an era of history having some distinctive feature	a period in British history during the reign of Queen Victoria in the 19th century; her character and moral standards restored the prestige of the British monarchy but gave the era a prudish reputation