Cult sites: Uppsala, with a noted phallic image in Adam of Bremen, Trøndelag and Swedish king-lore (Ynglingar).
Festivals: Harvest blót, Fröblot.
Peace, rain, and the harvest. The boar Gullinbursti and the ship Skidbladnir are myth-objects; the cult is grain and kingship. He is Njord's son and a different weather from Thor's thunderstorm.
Njord
Cult sites: No named temple survives in the sources; later tradition places his cult in coastal Norway and Sweden, especially among people who lived by ships and trade., The Ynglinga saga makes him a king at Noatun after the Aesir-Vanir peace, which is a way of saying his house was a harbor..
Festivals: Seafaring offerings, Harvest and plenty (Vanir cult).
Njord is asked for wind, wealth, and a safe voyage. Snorri says he rules the motion of wind and sea and the gifts of land and livestock. Evidence for a fixed festival calendar is thin; what we have is a sea god of plenty, not a temple inventory.
Freyr
Norse Pantheon
One of the Vanir, god of fertility, prosperity, and fair weather. Owner of the magical ship Skidbladnir and the golden boar Gullinbursti.
Freyr is the son of Njord, the sea god, and twin brother to Freyja. Born among the Vanir, he came to live with the Aesir as part of the hostage exchange that ended the Aesir-Vanir War. Upon his arrival in Asgard, the gods were so impressed by his noble bearing that they gave him Alfheim, the realm of the Light Elves, as a teething gift. He received the magical ship Skidbladnir and the golden boar Gullinbursti as gifts from the dwarven craftsmen, the sons of Ivaldi. His worship was especially prominent in Sweden, where he was considered an ancestor of the Yngling dynasty.
Freyr is the noble brother of Freyja and ruler of Alfheim (realm of the Elves). He brings peace and prosperity to mortals.
Vanir god of the sea, seafaring wealth, trade, and calm waters. Father of Freyja and Freyr.
Njord is one of the Vanir, the divine clan associated with prosperity, fertility, and the wealth that comes from land and sea. After the Aesir-Vanir War, he came to live among the Aesir as part of the hostage exchange that secured peace between the two groups of gods. In later Norse tradition he is remembered as a patron of sailors, merchants, fishermen, and all who rely on favorable winds and safe coasts.
Njord belongs to the Vanir, the gods of wealth, harbor weather, and the kind of luck that arrives with a full hold. After the Aesir-Vanir war he was sent to Asgard as a hostage, together with his children Freyja and Freyr, to keep the peace. The arrangement stuck: he lives among the Aesir at **Noatun**, the enclosure of ships, but his cult still smells of salt and trade rather than of Odin's hall.