on

عَنْ \ about: concerning: This is a book about snakes. for: instead of: I’m busy, so please do it for me. from: showing separation, distance, etc.: He took it away from her. He was far from home. of: (after an adj.) showing separation; from: a mile north of the town; free of trouble, (after an adj. or verb) concerning. off: (showing removal or separation) from: He jumped off his horse. She took her coat off the hook, (of movement) away from The car turned off the road into a field. on: (showing the subject) about; Is this a book on birds?.