babble / babel are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
babble: (noun) gibberish resembling the sounds of a baby. (verb) utter meaningless sounds, like a baby, or utter in an incoherent way. (verb) to talk foolishly.
babel: (noun) a confusion of voices and other sounds.
babble: b·AE·b·ah·l
babel: b·AE·b·ah·l
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)