S: (n) ascension ((astronomy) the rising of a star above the horizon)
S: (n) circulation (free movement or passage (as of cytoplasm within a cell or sap through a plant)) "ocean circulation is an important part of global climate"; "a fan aids air circulation"
S: (n) creep (a slow longitudinal movement or deformation)
S: (n) gravitation (movement downward resulting from gravitational attraction) "irrigation by gravitation rather than by pumps"