babytalk vs baby talk

babytalk and baby talk both are nouns.

Word	Noun	Adjective	Verb	Adverb
babytalk	Yes	No	No	No
baby talk	Yes	No	No	No

As nouns, babytalk and baby talk are synonyms defined as:

As nouns, babytalk and baby talk are synonyms defined as:

babytalk and baby talk: an adult's imitation of the speech of a young child

Other synonyms of babytalk include motherese.

babytalk (noun)	baby talk (noun)
the developing speech of a young child	the developing speech of a young child
an adult's imitation of the speech of a young child	an adult's imitation of the speech of a young child