Natural oils vs. natural butters?

[Priska]

Is there some difference between these two? Are butters stickier, harder to wash out and leaves the hair easier greasy? That would be awesome now when not even oils usually condition my hair efficiently enough... It sure might be the way I use it. I use oils as prepoo, mixed with shampoo and as rinse-out-oil. Usually not as a leave in into wet hair after wash, because I want to see the result from those treatments I mentioned, and I can't imagine washing and conditioning my hair without oils, so that I just add a little bit after wash, because that probably wouldn't be moisturizing enough for my hair type and length and would be a mess.
So, I'd love to hear answers to the question in title I mean butters like cocoa or shea butter as a ROO treatment (melting first). And I'm happy to hear about some butters I don't even know yet... Beeswax?...