ringside seat vs seats

ringside seat and seats both are nouns.

Word	Noun	Adjective	Verb	Adverb
ringside seat	Yes	No	No	No
seats	Yes	No	No	No

As nouns, seats is a hypernym of ringside seat; that is, seats is a word with a broader meaning than ringside seat:

ringside seat: first row of seating; has an unobstructed view of a boxing or wrestling ring
seats: an area that includes places where several people can sit

Other hypernyms of ringside seat include seating, seating area, seating room.

ringside seat (noun)	seats (noun)
first row of seating; has an unobstructed view of a boxing or wrestling ring	an area that includes places where several people can sit