ADCO CBD is CBD isolate whereas Milagro is a full-spectrum CBD
Full-spectrum CBD is made with an extract that contains all or nearly all of the compounds naturally present in the cannabis plant. This obviously includes CBD, as well as other cannabinoids (CBC, and CBG to name just a few), terpenes, flavonoids, and much more.
Full-spectrum CBD is believed to have greater therapeutic potential than isolates. This has to do with the entourage effect.