Synonyms , Antonyms and cinnamon

Today we were working on our grammar books and we had to write the synonym and antonym of the word that's written down on the side.

 We were also learning about the difference between synonym and cinnamon.

 Cinnamon is some kind of spice you can put in you're baking and synonym is just another word for something and here is an example ,rude - 

impolite - polite and that is what we were learning about.