All very similar, however slight variations are: recommendation is the act of saying that someone should do something or something is good and deserves to be chosen/heard about. -e.g: I recommend this book. I read it and think its really good or he gave me a recommendation suggestion is an idea, plan, or possibility that someone will give to someone else to consider. -e.g: Ella suggest we turn this way. or my suggestion is that we should have pizza for dinner Advice is an opinion that you give to someone -e.g: I advice you to go to a therapist or my doctor advised me to take this medication understand? :)