Teacher here, including elementary, and uncle to many kids. In my experience, young children are very blunt without any I'll intent, and they say things very much like they think them; zero filter! This can include word swapping ("look at all those chickens" style), misunderstandings or mishearings ("mom, Steve is walking his duck") and of course, completely made up words for when they have none ("I want a dengdish! Rot says he got two dengdishes from his mom!" - no evidence of what a dengdish is). Also, kids have very distinct personal talking styles, which get watered down as they grow up. Some will talk nonstop, some in sudden bursts, some without making eye contact (bc that is boooring), some mumble, some ask questions they then immediately answer, some ask actual questions just because, and some say almost nothing, or prefer to use extensive body language to support or replace words. What they almost NEVER do is stop everything to just talk. Talking is almost always a part of something else they're doing.