Sentence:  <WSD>Suzerainty</WSD> is a term which was originally used for the relation between the feudal lord and his vassal; the lord was said to be the suzerain of the vassal, and at that time <WSD>suzerainty</WSD> was a term of Constitutional Law only. With the disappearance of the feudal system, <WSD>suzerainty</WSD> of this kind likewise disappeared. Modern <WSD>suzerainty</WSD> involves only a few rights of the suzerain State over the vassal State which can be called constitutional rights. The rights of the suzerain State over the vassal are principally international rights, of whatever they may consist. 
Meaning of the word marked with <WSD> tags:  A relation between states in which a subservient nation has its own government, but is unable to take international action independent of the superior state; a similar relationship between other entities.