flight attendant vs attender

flight attendant and attender both are nouns.

Word	Noun	Adjective	Verb	Adverb
flight attendant	Yes	No	No	No
attender	Yes	No	No	No

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

flight attendant: an attendant on an airplane
attender: someone who waits on or tends to or attends to the needs of another

Other hypernyms of flight attendant include attendant, tender.

flight attendant (noun)	attender (noun)
an attendant on an airplane	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