wedding guest vs guest

wedding guest and guest both are nouns.

Word	Noun	Adjective	Verb	Adverb
wedding guest	Yes	No	No	No
guest	Yes	No	No	No

As nouns, guest is a hypernym of wedding guest; that is, guest is a word with a broader meaning than wedding guest:

Other hypernyms of wedding guest include invitee.

wedding guest (noun)	guest (noun)
a guest at a wedding	(computer science) any computer that is hooked up to a computer network
	a visitor to whom hospitality is extended
	a customer of a hotel or restaurant etc.