Wight - Wight is a Middle English word, from Old English wiht, and used to describe a creature or living sentient being. It is akin to Old High German wiht, meaning a creature or thing.
Landvættir - These spirits are the wights that are of and attached to the land. They are the life of the stones, forests, rivers, grove, canyons, of the earth. They are honored by small shrines in which they are offered gifts. Good gifts are alcohol, honey, grains, or coins. It is possible to scare them off, anger them, and make them happy through your actions.
Álfar and Dvergr - These are beings from Ljossálfaheimr, Svartálfaheimr, and Miðgarðr. Therea are grey lines between Dvergr (dwarves) and Svartálfar, but many agree that Dwarves are their own beings and Svartalfar are ''black elves'' and are different beings. Both are intense spirits of the hearth and land. It is said that they like broken glass and sharp things. They also enjoy blood and mead mixed together and poured over their offerings. Dökkálfar (dark elves) are mentioned as dark gravely álfar inhabiting mounds on Miðgarðr. These are seen as spirits of the dead, ancestors who have become the álfar inhabiting that burial mound. The Ljossálfar (light elves), however, are more light hearted and enjoy poetry, shiny offerings, cream and honey, and wight houses to dwell in.
Trolls - Trolls are harmful wights in general. They can either be giant in origin or just some ill wishing wight that simply means to harm. Many believe the term's hard use is for a Jötun who means harm. There are many folktales in Scandinavia of trolls who are not evil, or ill wishing, but are simply dangerous and reckless. Folktales speak of trolls' obsession with taking mortal spouses as well. They are said to dwell hidden within rocks, cliffs, and caves.
Giants - Also known as etins, thurse, rise, muspili, and Jötunar. Giants are a large and broad race of beings that contain many different traits and personalities. These include but are not limited to, frost giants, fire giants, and storm giants. Thor's mother is a giant, and she is a friend of the gods. Hymir however is not a friend to the gods, and he is also a giant. Giants are not necessarily evil or bad, their motives and alliances are complex.
Disir - Disir are the ancestral spirits of the female figures in your life and family history. They are protecting and fierce. They have become a sort of spiritual body attached to the individual and ancestral line after death, and continue to be added to as more female members of the family pass on. They are honored on Disablot, Disting, and Winter Nights.
Valkyries - These are winged warrior maidens that collect the honored dead from the battlefield. They bring the honored dead, the Einherjar, to Valhöll or Sessrúmnir. Several are mentioned by name in the Poetic Eddas.