throne vs cathedra

throne and cathedra both are nouns.

Word	Noun	Adjective	Verb	Adverb
throne	Yes	No	Yes	No
cathedra	Yes	No	No	No

As nouns, cathedra is a hyponym of throne; that is, cathedra is a word with a more specific, narrower meaning than throne:

Other hyponyms of throne include bishop's throne, mercy seat, musnud, peacock-throne.

throne (noun)	cathedra (noun)
the position and power of an exalted person (a sovereign or bishop) who is entitled to sit in a chair of state on ceremonial occasions	a throne that is the official chair of a bishop
the chair of state for a monarch, bishop, etc.
a plumbing fixture for defecation and urination

throne (verb)	cathedra (verb)
put a monarch on the throne
sit on the throne as a ruler