A proper term would be "loquacious" (talkative, garrulous, verbose).
Slang terms include "chatter box," babbler, or "motormouth."
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A person who talks a lot is often referred to as a "chatterbox" or "blabbermouth."
A person who talks less in Hindi can be referred to as "chup" or "khamosh."
A person who talks out of turn can be called disruptive, inconsiderate, or impulsive.
A person who talks nonsense can be called an eccentric, a babbling fool, or a gibberish speaker.
A person who speaks a lot is often referred to as talkative or loquacious.
A person who uses a lot of words can be referred to as verbose or loquacious.