oral stage vs early childhood

oral stage and early childhood both are nouns.

Word	Noun	Adjective	Verb	Adverb
oral stage	Yes	No	No	No
early childhood	Yes	No	No	No

oral stage (noun)	early childhood (noun)
(psychoanalysis) the first sexual and social stage of an infant's development; the mouth is the focus of the libido and satisfaction comes from suckling and chewing and biting	the early stage of growth or development