A continuous frame is a structure which is dependent for its stability and load carrying capacity, upon the ability of one or more of its joints to resist moment.
In other words, one or more joints in continuous frame are more or less rigid.
Truss or articulated structures
A truss or an articulated structure, composed of bars, connected by frictionless pins at joints, and arranged so that the area enclosed within the boundaries of the structure is sub-divided by the bars into geometrical figures usually triangles.
A truss is an assemblage of members or bars forming a framework of different geomteric figures usually triangles.