There are a lot of similarities among the water signs, intuitive, emotional, artistic, etc. All of them are associated with magic but a different type. Scorpio takes on dark magic. Pisces spiritual and sometimes new age like magic. Cancer gets the middle ground by being associated with witchcraft, spells, paganism, etc.
Scorpio is the most intense water sign. They are more vindictive, dominant, secretive, and jealous than the other water signs.
While Scorpio is associated with passion and deepness, Cancer with sensitivity, and Pisces with emotional outburst or change all of the water signs are equally as deep, passionate, sensitive, etc. Scorpio does however have the most fixed personality out of all the water signs and is associated with transformation. While Pisces and Cancer are more adaptable and easygoing, Scorpio might face the most changes in their life and personality.
Cancer is the most protective and private out of the water signs. They are protective over their loved ones and fiercely protective of themselves. They are also more nurturing and balanced than the others.
Pisces is the most fluid of the water signs and is the most open about their emotions. Scorpio is all about secrecy with the way they feel and Cancer is protective about their emotions. However you will always know how a Pisces feels. Pisces expresses their emotions in almost all ways, communication, art, actions, and the list can go on. Cancer and Scorpio might have to turn to creative outlets more so to express themselves and needs others to sometimes crack them open or inspire them to share. The best way to inspire a water sign is through love, romance, and general human connection. All three of them desire a full on connection with others. Pisces wants to become one with their partner, engulf them. Cancer is all about unity and building a home and/or life together. Scorpio is about fully understanding each other and accepting one another.
Scorpio also have an urge to understand and master the world. Cancer wants to guard and take care of others in the world. Pisces wants to create as well as learn and live the human condition.
Scorpio is associated with self-healing, Cancer the healing of others, Pisces is linked to both.
Scorpio always knows they are right, Cancer will refuse to be wrong, and Pisces will somehow trick you or manipulate you into thinking they are right.
Cancer holds a grudge, Scorpio wants revenge, and Pisces forgives.
Scorpio likes to show off their individuality, what they like, how they are, etc. Scorpio gets really into their fandom and hobbies. They are active players in stuff they like. Is normally sure about what they like and who they are in the present.
Cancer is open about what they like as well but can be a little less active in their fandoms or hobbies and Cancer is associated with a lack of self. But that just means it is part of their life journey to create themselves in a solid way.
Pisces is always changing what they are into. A gamer Pisces might be obsessed with Dark souls one week and the next they are all about Elder Scrolls or Zelda. They will like screamo and then surprise you with randomly being obsessed with a pop song.
Pisces is associated with compassion and empathy.
Cancer is associated with kindness and sympathy.
Scorpio is associated with emotional inspiration and guidance as well as boosting another person’s energy.