Communism is the communal ownership of all means of production (not just the workers owning the place they work at like socialism) and communal distribution of resources based on need (ideally). A hippie commune where everyone works a job and everyone is distributed food, goods, etc. based on their needs without money being involved is a solid, small scale model of communism, though there are a lot of issues and various theoretical solutions when it’s scaled up beyond a group of like-minded individuals who all know each other. In theory such a society is classless and has no use for currency. The reality is such a society has never actually existed and things fell apart along the way, usually by someone seizing power in the transitionary period and the state becoming a dictatorship instead.
For small scale references, worker cooperatives are a good example of socialism and communes are a good example of communism.