Free speech: Free speech is like freedom speech.That means there is no fear of anything.There is no fear of telling or discussing or giving any speech.You can freely give speech.

Hate speech: Hate speech is like a speech which creates problem or create argument.People don't like the  talk or discussion or speech.It makes quarel between peoples,countries or etc.

Offensive speech: Offensive speech is not almost like hate speech but it creates controversy.People cannot accept it fully.It creates so many points.