Reiki is a subset of energy work, involving the channeling of Reiki, or Universal Energy. Being Reiki-attuned means you have taken steps to channel this specific energy in healing. Reiki is intelligent and only does what is good for the person. Intuitive healing uses the intuition to direct energy, also with the intention of promoting the highest good of the client. This is a more broad term. Often, the tools used are ones that the individual practitioner has developed in order to deal with certain issues. For example, I would use my energetic toolbox and intentions to remove an energetic weapon and dispose of it, and also channel Reiki to heal and fill the area with good energy and seal the aura. No two practitioners are the same, although many use similar tools.