baby vs babyhood

baby and babyhood both are nouns.

Word	Noun	Adjective	Verb	Adverb
baby	Yes	No	Yes	No
babyhood	Yes	No	No	No

baby (noun)	babyhood (noun)
a project of personal concern to someone	the earliest state of immaturity
a very young mammal	the early stage of growth or development
a very young child (birth to 1 year) who has not yet begun to walk or talk
the youngest member of a group (not necessarily young)
an immature childish person
an unborn child; a human fetus
a beloved person; used as terms of endearment

baby (verb)	babyhood (verb)
treat with excessive indulgence