Отошёл has two basic meanings: 1) to move to be less close to something Я попросил их отойти от машины -- I asked them to move away from my car 2) to go outside / to leave a place for a short time. Он отошел на несколько минут -- he's stepped out for a few minutes Уйти means to leave a certain place, to depart from a certain place. Depending on the context, you might translate it as to walk away, to go away etc. Я ушел с работы в шесть часов -- I left work at six. Уйти also means to leave someone: Он ушёл от жены -- He left his wife Пошёл is the perfective pair for the imperfective verb 'идти', to go You can search these website to find some examples: https://context.reverso.net/translation/ https://www.linguee.com/english-russian/ http://ruscorpora.ru/en/search-main.html

The verbs you are trying to use are so diverse and so common, so there is no short, simple answer. First of all, it all depends on prepositions you use with. Like in English you might have a "bare" verb "put" but if you start adding to it prepositions you will get a tons of different meanings. However I will try to cover some basic, most common on my opinion cases: **Отошел** It means he is away but he will be back soon. You can also say "Он отошел на пол часа". - "He is away, he will be back in a halve of hour". Or you can also say "Я отойду на 5 минут". That means - "I am leaving. I will be back in 5 minutes / be right back" **Ушел** Means he left and they are not supposed to go back. "Разговор по телефону. Я могу поговорить с ваши начальником? К сожалению, он ушел" - "Phone conversation. Can I talk to your boss? No, unfortunately he's gone" **Он пошел**. Basically many meanings. But the main idea - to START moving or going. "Где папа? Он пошел в магазин" - "Where is dad? He's gone to shop". You can _often_ change "ушел" by "пошел" in this context - but "ушел" has a strong possibility that the one who "ушел"/ "left" is going to return. "Где папа? Он ушел в магазин, он скоро вернется" - "Where is dad? He has left to shop, but he will be back soon" Another interesting examples of "пошел": - Смотри! Снег пошел - look! the snow's started - Он пошел в три года - He began to walk ( stopped being toddler ) at age of 3. **Other meanings** Be aware that these verbs also have **many other meanings depending on prepositions used with** ( as @Denis has in his example with "отошел от" or like I had with "отошел на 5 минут") and sometimes used in idioms. But I just to try to break it down for the most common cases that came to my mind. HTH Alexey

"Отошёл" - ненадолго, недалеко. (Он отошёл, но скоро вернётся) "Ушёл" - человека здесь нет (Его здесь нет, он уже ушёл) "Пошёл" - начать движение пешком в определённом направлении. (Он пошёл в магазин)

It's hard to explain without a context. In general, отошел is for moved away, ушел is for left, and пошел is for went/set off/headed to.