server vs participant

server and participant both are nouns.

Word	Noun	Adjective	Verb	Adverb
server	Yes	No	No	No
participant	Yes	No	No	No

As nouns, participant is a hypernym of server; that is, participant is a word with a broader meaning than server:

Other hypernyms of server include player.

server (noun)	participant (noun)
utensil used in serving food or drink	someone who takes part in an activity
(computer science) a computer that provides client stations with access to files and printers as shared resources to a computer network	a person who participates in or is skilled at some game
a person whose occupation is to serve at table (as in a restaurant)
(court games) the player who serves to start a point