Story Quests
From Destiny 2 Wiki
Introduction
Story Quests are the frameworks within which players experience the various Story Missions of Destiny 2.
Story Quests can be subdivided into Campaigns and Meditations. Campaigns are the Story Quests within which players experience many Story Missions for the first time while Meditations are Story Quests which can be picked up from Ikora Rey each week and allow players to replay individual Story Missions from Campaigns they have completed. (Meditations mechanics are covered in more detail here.)
Vanilla Story Quests
Campaign: The Red War
Meditations: All The Red War Story Missions from Combustion onward
Curse of Osiris Story Quests
Campaign: Curse of Osiris
Meditations: All Curse of Osiris Story Missions other than Beyond Infinity