They fought for 'freedom of speech'. = They fought for the right to/of 'free speech'. [=they fought for the legal right to express their opinions freely]
He kept revising his 'speech' [=the words that he had written for his speech] right up until the last minute.
She thanked us in her 'acceptance speech'. [=a speech given by someone receiving an award or prize]
(..) I don't have my jammies. You don't need them. My baby sister, ladies and gentlemen. Shut up. I'm happy. Oh, this is so nice! I have to make a speech. Of all the guys that Monica has been with, and that is a lot... ...I like you the best. Thank you, Pheebs. That's very sweet. (..)1996 TvShow: Friends Title: The One Where Dr. Ramoray Dies Season: 2 Episode 18