Synonyms for Guest (same or very similar meaning)
WordNet sense 1 (United States journalist (born in England) noted for his syndicated homey verse (1881-1959)):
Edgar Albert Guest, Edgar Guest
WordNet sense 2 (a visitor to whom hospitality is extended):
invitee
WordNet sense 3 ((computer science) any computer that is hooked up to a computer network):
client, node
From the ODE community, based on WordNet
add/edit