courtier vs attender

courtier and attender both are nouns.

Word	Noun	Adjective	Verb	Adverb
courtier	Yes	No	No	No
attender	Yes	No	No	No

As nouns, attender is a hypernym of courtier; that is, attender is a word with a broader meaning than courtier:

courtier: an attendant at the court of a sovereign
attender: someone who waits on or tends to or attends to the needs of another

Other hypernyms of courtier include attendant, tender, adult male, man.

courtier (noun)	attender (noun)
an attendant at the court of a sovereign	someone who waits on or tends to or attends to the needs of another
	a person who is present and participates in a meeting
	someone who listens attentively